Regarding cervical cancer, which is the true statement?
a. HPV types 6 and 12 are high risk for developing cervical cancer.
b. The new vaccines can prevent invasive carcinoma but not CIN.
c. As soon as the new vaccination is introduced, cervical screening programmes can cease.
d. HPV types 16 and 18 account for the majority of cervical cancer in the UK.
e. HPV is an oncogenic virus for squamous cell but not adenocarcinoma of the cervix.