Use the Following to Answer the Questions Below

Multiple Choice

Use the following to answer the questions below:
For each of the heterocyclic bases, choose a correct characterization from the response list. Responses may be used more than once or need not be used at all.

-Thymine

A) base found only in DNA
B) base found only in RNA
C) "single ring" base found in both DNA and RNA
D) "double ring" base