According to Chargaff's rule, base pairing in DNA should resemble which of the following?

A = T; C = G

A = C; T = G

A = G; T = C

A = U; C = G

Chargaff rule states that in DNA there is always an equality in the quantity of the bases A and T and also the bases G and C.

So keeping this idea in mind, we can conclude:

According to Chargaff's rule, base pairing in DNA should resemble

A = T; C = G

A. A = T; C = G

is the right answer