Which HPV types are the 'least bad' (low-risk/low oncogenic potential)?

HPV 6 and 11 are LOW-RISK types — they cause BENIGN lesions: condyloma acuminata (genital warts), recurrent respiratory papillomatosis (laryngeal papillomas), and oral papillomas. They have very LOW oncogenic potential. HPV 16 and 18 are HIGH-RISK (strongly oncogenic — cause cervical and oropharyngeal cancers). HPV 31, 33, 56, 58 are intermediate-to-high risk. The GARDASIL vaccine protects against HPV 6, 11, 16, 18 (quadrivalent). A is correct.