After Offering a Teenager the HPV Vaccine, the Teenager Responds

After offering a teenager the HPV vaccine, the teenager responds by saying, "I can't have the vaccine because I have already been sexually active." Which of the following statements is the best response by the nurse?

A) "You can still benefit from the vaccine, but there is a chance it will not be as effective."
B) "The best way to protect yourself now is to make sure all your future sexual partners have received the vaccine."
C) "You are correct, the vaccine is only indicated for females who have never been sexually active."
D) "It depends on the number of partners you have had.If you have had less than five partners, you are still eligible for the vaccine."