In the DNA of an organism, which is double stranded, 30% of the bases are cytosine. The percentage of the other three bases expected to be present in this DNA are:

( A for adenine, G for guanine, T for thymine and C for cytosine).

• A

  A- 30%, G- 20%, T-20%

• B

  A- 20%, G- 30%, T-20%

• C

  A- 30%, G- 30%, T-10%

• D

  A- 10%, G- 20%, T-30%