The right answer is:
Adenine - Cytosine - Cytosine - Guanine
Thymine - Guanine - Guanine - Cytosine.
A base pair (bp) is the pairing of two nucleobases located on two complementary strands of DNA or RNA. This pairing is carried out by hydrogen bridges. There are four types of nucleic bases: A-T-C-G, these letters for Adenine, Thymine, Cytosine and Guanine. Paired with T and C mates with G.