Which of the Following Describes an Interesting Feature of the PreC

Which of the following describes an interesting feature of the preC and pregenomic mRNAs produced by the hepatitis B virus?

A) They are extensively spliced to produce a set of nested mRNAs.
B) They are transcribed by the cellular RNA polymerase III enzyme.
C) They are produced by the reverse transcriptase enzyme.
D) They are transcribed past a polyadenylation site near the promoter.
E) They each code for several proteins due to the use of alternative start codons.