Two polynucleotide strands make up a DNA molecule.
What is a correct description?
A The percentage of cytosine is 50% of that of guanine in the whole molecule.
B The percentage of cytosine is the same as that of guanine in each strand.
C The percentage of cytosine is the same as that of guanine in the whole molecule.
D The percentage of cytosine is the same in each strand of the molecule