The Patient Tells the Nurse That She Is Concerned About

The patient tells the nurse that she is concerned about terrorist activity and questions if everyone should be immunized against smallpox. What is the best response by the nurse?

A) "The vaccine has side effects, which are serious and could kill many people."
B) "I really do not think our country has enough vaccine to do this."
C) "Don't be so concerned; if an attack comes, we will immunize people then."
D) "The vaccine has some serious side effects, but this is probably a good idea."