Which of the following correctly describes the components of dna? a. dna is made up of proteins consisting of the sugar ribose, a carbon ring, and one of four phosphorus bases. b. dna is made up of nucleotides consisting of the sugar ribose, a carbon ring, and one of four phosphorus bases. c. dna is made up of proteins consisting of the sugar deoxyribose, a phosphate, and one of four nitrogenous bases. d. dna is made up of nucleotides consisting of the sugar deoxyribose, a phosphate, and one of four nitrogenous bases.