Suppose You Have Discovered a New Virus and Have Isolated

Suppose you have discovered a new virus and have isolated its nucleic acids. What feature could you look for to determine whether the nucleic acids of this virus are RNA or DNA?

A) If it is RNA, there will be no adenine.
B) If is RNA, it will contain deoxyribose.
C) If it is RNA, it will contain ribose.
D) If it is DNA, the virus will not contain proteins.