The diagram illustrates the structures of several drugs that are similar in structure to nucleotides. The presence of these drugs lowers nucleic acid synthesis. Which statement explains how the drugs reduce nucleic acid synthesis?
- AIncreasing the concentration of these drugs results in the increased length of the nucleic acid.
- BThey are non-competitive inhibitors of the enzymes that catalyse the synthesis of DNA or RNA.
- CThey bind to pyrimidine nucleotides and the base pair is the wrong size.
- DThey replace purine nucleotides causing the synthesis of incomplete nucleic acids.