Benzopyrene, a Component of Cigarette Smoke, Can Induce DNA Mutations

Benzopyrene, a component of cigarette smoke, can induce DNA mutations by

A) converting cytosine to uracil by deamination.
B) converting an amino group on cytosine into a keto group.
C) adding a chemical to guanine, making it unavailable for base pairing.
D) changing bases to forms unrecognizable by DNA polymerase.
E) breaking the sugar-phosphate backbone of DNA.