A Nurse Counsels a Couple on Sex-Linked Disorders

A nurse counsels a couple on sex-linked disorders.Both are carriers of the disorder.They ask the nurse how this disorder will affect any children they might have.The nurse's best response is:

A) "If you have a daughter,she will not be affected."
B) "Your son will be affected,since the father has the disorder."
C) "There is a 25% chance that your son will have the disorder,since the mother has the disorder."
D) "There is a 50% chance that your son will be a carrier only."