Please help!

I can't choose. They all seem right to me :/

Why must cell division be different between asexual reproduction and sexual reproduction?

A. Sexual reproduction requires that the amount of DNA in a cell be halved.

B. Sexual reproduction requires that the amount of DNA in a cell be doubled.

C. Sexual reproduction occurs in cells with more than one chromosome.

D. Sexual reproduction involves a change in DNA amount but not in the number of cells.