In DNA, which base pairing is correct with Chargaff's Rule?

answer: Chargaff's rules state that DNA from any cell of any organisms should have a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.

i'd think it's paralell

they are c. hope this !