mRNA is obtained from DNA, and has a complementary sequence taking into account that adenine binds to thymine and guanine to cytosine, but also replacing thymine with uracil in RNA. Therefore, the complementary sequence of the mRNA (the DNA) would be as follows:
mRNA: UUCAAUGCCUCAAGGUUAAAGCGGCGG
DNA: AAGTTACGGAG TTC CAATTTCGCCGCC
Therefore, the answer is the first option.
