Which of the Following Describes the Major Difference Between Hepatitis

Multiple Choice

Which of the following describes the major difference between hepatitis delta virus (HDV) and the plant viroids and satellite RNAs?

A) Only the HDV genome contains a ribozyme activity.
B) Only HDV requires a helper virus.
C) Only the HDV genome encodes a protein.
D) Only HDV replicates using a rolling circle mechanism.
E) Only HDV requires RNA polymerase II during its replication cycle.