The Perinatal Nurse Is Giving Discharge Instructions to a Woman

The perinatal nurse is giving discharge instructions to a woman who had a suction curettage secondary to a hydatidiform mole.The woman asks why she must take oral contraceptives for the next 12 months.What is the basis for the nurse's response?

A) The chance of a successful pregnancy within 1 year of this condition is very small.
B) A major risk after a molar pregnancy is a type of cancer that can be diagnosed only by measuring the same hormone that the body produces during pregnancy;therefore,pregnancy would make the diagnosis of this cancer more difficult.
C) The chance of developing a second molar pregnancy after 1 year is rare.
D) Oral contraceptives are the only form of birth control that will prevent a recurrence of a molar pregnancy.