Which Property Is Not Exhibited by Tumor-Causing Retroviruses

Multiple Choice

Which property is not exhibited by tumor-causing retroviruses?

A) It contains a gene encoding a reverse transcriptase.
B) The gag gene encodes a viral surface protein.
C) The v-onc gene causes the tumor.
D) The viral oncogene usually has a cellular homolog.
E) The env gene encodes the capsid protein of the virion.