Inosine, One of the Common Alternative Bases Found in RNA

Multiple Choice

Inosine, one of the common alternative bases found in RNA, is shown below. How would inosine form hydrogen bonds in a double helical section of RNA?

A) 1 H-bond donor group, 0 H-bond acceptor groups
B) 0 H-bond donor groups, 1 H-bond acceptor group
C) 1 H-bond donor group, 1 H-bond acceptor group
D) 2 H-bond donor groups, 1 H-bond acceptor group
E) 1 H-bond donor group, 2 H-bond acceptor groups