Which of these is a difference between a DNA and an RNA molecule?
A)DNA contains uracil, whereas RNA contains thymine.
B)DNA contains nitrogenous bases, whereas RNA contains phosphate groups.
C)DNA is a polymer composed of nucleotides, whereas RNA is a polymer composed of nucleic acids.
D)DNA contains five-carbon sugars, whereas RNA contains six-carbon sugars.
E)DNA is double-stranded, whereas RNA is single-stranded.