[Answer] Which of the following statements best summarizes the structural differences between DNA and RNA?a) RNA is a protein whereas DNA is a nucleic acid.b) DNA is a protein whereas RNA is a nucleic acid.c) RNA is a double helix but DNA is single-stranded.d) DNA nucleotides contain a different sugar than RNA nucleotides.e) RNA is a protein whereas DNA is a nucleic acid; and RNA is a double helix but DNA is single-stranded.