The Couple at 12 Weeks' Gestation Has Been Told That

The couple at 12 weeks' gestation has been told that their fetus has sickle-cell disease. Which statement by the couple indicates that they are adequately coping?

A) "We knew we were both carriers of sickle cell. We shouldn't have tried to have a baby."
B) "If we had been healthier when we conceived, our baby wouldn't have this disease now."
C) "Taking vitamins before we got pregnant would have prevented this from happening."
D) "The doctor told us there was a 25% chance that our baby would have sickle disease."