Which Conclusion Can Be Drawn from the Experimental Observation That

Multiple Choice

Which conclusion can be drawn from the experimental observation that a single strand of DNA contains 2100 dA residues and 1800 dT residues?

A) There must have been some loss of material in the extraction because the number of dA and dT residues must be the same.
B) This is a palindromic sequence.
C) There must be 2100 dT and 1800 dA residues on the complementary strand.
D) none of these