87. Which one of the following statements about the reverse transcriptases of retroviruses and the RNAreplicases of other single-stranded RNA viruses, such as R17 and influenza virus, is correct?
(A) Both enzymes can synthesize either RNA or DNA from an RNA template strand.
(B) Both enzymes can utilize DNA in addition to RNA as a template strand.
(C) Both enzymes carry the specificity for the RNA of their own virus.
(D) Both enzymes have error rates similar to those of cellular RNA polymerases.
(E) Both enzymes require host-encoded subunits for their replication function.