Wrong A-Level grade on CV (ADVICE)

Hi everyone, a little background - I have been offered a position in a big company not in the finance/law field. For this job on the job spec, they require a university degree. I have this degree and have put it on my cv so it’s all clear. But I realised that one of my grades on my A-Levels is incorrect on my cv. They do not state on the job requirements anything about A-Levels, just a degree. I’ve been offered the contract and in the contract it says nothing about ‘subject to a background check’ or anything like that.

But let’s say hypothetically, I was to do a background check from a third party, I’ll be required to enter a form inputting all my details right. Let’s say everything in that form I input is correct and is verified such as my employment history and education (degree grade and alevel grades providing they want me to include those grades) and it All comes out perfect and clean. Will they compare the incorrect alevel grade which is on my cv listed as a B, to the clean and checked background check with my correct alevel grade listed as a C. Does this make sense?

Or do background education checks simply state enter your highest degree as I’ve been talking to some people and this is all that’s required.

I’ll forward to your insights and btw I understand I should’ve been more careful in my CV and was an complete oversight when I was formatting my CV before applying.

Hi everyone, a little background - I have been offered a position in a big company not in the finance/law field. For this job on the job spec, they require a university degree. I have this degree and have put it on my cv so it’s all clear. But I realised that one of my grades on my A-Levels is incorrect on my cv. They do not state on the job requirements anything about A-Levels, just a degree. I’ve been offered the contract and in the contract it says nothing about ‘subject to a background check’ or anything like that.

But let’s say hypothetically, I was to do a background check from a third party, I’ll be required to enter a form inputting all my details right. Let’s say everything in that form I input is correct and is verified such as my employment history and education (degree grade and alevel grades providing they want me to include those grades) and it All comes out perfect and clean. Will they compare the incorrect alevel grade which is on my cv listed as a B, to the clean and checked background check with my correct alevel grade listed as a C. Does this make sense?

Or do background education checks simply state enter your highest degree as I’ve been talking to some people and this is all that’s required.

I’ll forward to your insights and btw I understand I should’ve been more careful in my CV and was an complete oversight when I was formatting my CV before applying.