In a DNA molecule, ______ bonds form between nitrogenous bases, such that A (adenine) pairs with its complement ______, and G (guanine) pairs with its complement ______.
A. ionic; C (cytosine); T (thymine)
B. hydrogen; T (thymine); C (cytosine)
C. hydrogen; G (guanine); T (thymine)
D. ionic; T (thymine); G (guanine)