A Client with HIV Asks If There Is a Vaccine

A client with HIV asks if there is a vaccine to prevent transmission to the client's significant other. What is the nurse's best response?
A) "This virus has challenged scientists and they have created a pseudo vaccine."
B) "There is a vaccine that prevents the older adults from getting the HIV infection."
C) "A vaccine has been developed but it only assists young children."
D) "At present, there is no vaccine to prevent HIV transmission."