A Client States,"I Have Been Told That My Cancer Started

A client states,"I have been told that my cancer started because of cell mutation.I've also been told that everyone has cell mutations that occur every day.Why doesn't everyone develop cancer?" What should the nurse include in a response to this question?

A) "Some people have stronger immune systems than others."
B) "Some mutations also occur in genes that prevent the development of cancer."
C) "Some genes work to keep damaged cells from reproducing."
D) "Some genes work to repair any DNA changes that occur."
E) "Some genes control the environment in which cells are found."