Biology question- monomers

Hi, please could i have help on this question? I dont understand why option 3 is incorrect?
Here is the question: https://app.gemoo.com/share/image-annotation/604498832167358464?codeId=M0B5xpQwmONZX&origin=imageurlgenerator
Thank you!

its been months since ive done a level biology but is it not because beta glucose monomers form bonds on carbon 2 as well

Original post by siahateskwl

its been months since ive done a level biology but is it not because beta glucose monomers form bonds on carbon 2 as well

Oh ok thank you!

Original post by anonymous294

Oh ok thank you!

is this OCR biology?

Original post by siahateskwl

is this OCR biology?

No CIE

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