Which of the following DNA molecules is the most stable A 5C

Which of the following DNA molecules is the most stable?

A. 5\'-CTGCATAC-3\'
3\'-GACGTATG-5\'

B. 5\'-GAAATTTC-3\'
3\'-CTTTAAAG-5\'

C. 5\'-AGTCGAAT-3\'
3\'-TCAGCTTA-5\'

D. 5\'-GCGTGCAC-3\'
3\'-CGCACGTG-5\'

E. 5\'-GGATCCTG-3\'
3\'-CCTAGGAC-5\'

Solution

D. 5\'-GCGTGCAC-3\'
3\'-CGCACGTG-5\'

As there are three hydrogen bonds between guanine and cytosine hence making it more stablerunning from  5\'-3\'