NEET 2015 Biology question

In sea urchin DNA, which is double stranded, 17% of the bases were shown to be cytosine. The percentages of the other three bases expected to be present in this DNA are :-

• (1)G 17%, A 16.5%, T 32.5%
• (2)G 17%, A 33%, T 33%Correct
• (3)G 8.5%, A 50%, T 24.5%
• (4)G 34%, A 24.5%, T 24.5%