Which statement correctly describes DNA base pairing?
a. Two hydrogen bonds bind A and T; three hydrogen bonds bind G and C.
b. Two hydrogen bonds bind A and C; three hydrogen bonds bind T and G.
c. Two hydrogen bonds bind G and C; three hydrogen bonds bind A and T.
d. Two hydrogen bonds bind A and T, and two hydrogen bonds bind G and C.
e. Three hydrogen bonds bind A and C, and three hydrogen bonds bind T and G.
ANSWER: a
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