The Mother of a 6-Year-Old Child Says to the Pediatric

The mother of a 6-year-old child says to the pediatric nurse,"My son had such a bad case of the measles.I hope he doesn't get them again." What is the most appropriate response by the nurse?

A) "It sounds like he was very sick. Let's hope he doesn't get them again."
B) "Measles is a disease that once you've had it, you won't get it again. The body has learned to make cells that will fight off any future exposures."
C) "Would you like me to prepare a plan for you with ways you can prevent future episodes of measles?"
D) "It will be important for you to keep your son away from other children with measles, as he is now more susceptible."