There are approximately 100 kinds of human papillomaviruses (HPV). Two of these, HPV 16 and 18, are responsible for:
A. Most cases of genital warts.
B. Common skin warts, but not genital warts.
C. Most cases of cervical cancer.
D. Most cancers of the mouth and throat.
E. All cases of genital warts that eventually become cancer.
