A DNA fragment 15 base pairs in length was examined in order to determine how many nucleotides were on each polynucleotide strand. Some of the findings are shown below. The table gives the numbers of nucleotide bases A, C, G and T for strand 1 and strand 2. Strand 1 contains 6 cytosine bases and 3 thymine bases. Strand 2 contains 4 thymine bases. How many nucleotides containing guanine were present in strand 1?
- A2
- B3
- C4
- D6