In which of the following will DNA melt at the lowest temperature?

5’ – AATAAAGC – 3’3’ – TTATTTCG – 5’ has 18 hydrogen bonds and others have more hydrogen bonds. Hence DNA with this sequence melts at low temperatures compared to5’ – AATGCTGC – 3’3’ – TTACGACG – 5’5’ – ATGCTGAT – 3’3’ – TACGACTA – 5’ and 5’ – GCATAGCT – 3’3’ – CGTATCGA – 5’