An antimetabolite which undergoes biotransformation to form an inhibitor of DNA polymerase is -
Ans. is 'b' i.e., Cytosine arabinosideo Cytarabine is phosphorylated in the body to the corresponding nucleotide which inhibits DNA synthesis by inhibiting DNA polymerase.
Vinablastine
Cytosine arabinoside
Methotrexate
Chlorambucil