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