Sub shells 4s and 3d

So out of the following which gain 4s1 then fill 3d before getting 4s2:
1. Just Cu and Cr
2. All d-block elements
3. all transition metals

i fear its 2 or 3 and the exam will trick me by giving a non-transition d block metal. (vanadium i believe? havent learnt that far yet)

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So out of the following which gain 4s1 then fill 3d before getting 4s2:
1. Just Cu and Cr
2. All d-block elements
3. all transition metals

i fear its 2 or 3 and the exam will trick me by giving a non-transition d block metal. (vanadium i believe? havent learnt that far yet)