If 30% of x is 21, what is 80% of x?
(A) 28
(B) 35
(C) 42
(D) 48
(E) 56

Dna is a polymer of which consist of a sugar, a phosphate group, and a a. amino acids; nucleotide b. nucleic acids; nucleotide c. nucleotides; nitrogenous base d. nucleotides; nucleic acid e. proteins; nucleotide