Cervical tumors caused by human papillomavirus do not show the typical mutations in the p53 gene that most cancer cells have.Which of the following explains why?

A) The virus is not sensitive to the effects of p53.
B) The E6 protein causes the degradation of the p53 protein.
C) Apoptosis does not occur in cervical epithelium.
D) Cervical epithelial cells do not express p53.
E) The E7 protein binds to pRb, preventing it from inducing apoptosis.