Which of the following is true about the structure of DNA?

A. It consists of two polynucleotide strands held together by hydrogen bonds
B. It is made of a single strand of nucleotides
C. It contains ribose sugar
D. It is found only in the nucleus of eukaryotic cells

Answer: It consists of two polynucleotide strands held together by hydrogen bonds


Additional Information: DNA is a double-stranded molecule composed of nucleotides, with the strands held together by hydrogen bonds between complementary base pairs.