During a prenatal education class, an expectant mother tells the group about a friend whose blood ...

During a prenatal education class, an expectant mother tells the group about a friend whose blood pressure became so high during pregnancy that she had to be admitted to hospital.
 
  Which of the following statements should the nurse include in response to this?
  A)
  A large increase in blood pressure is a normal part of the changes in blood circulation that accompany pregnancy.
  B)
  By avoiding salt, staying active, and minimizing weight gain, you can prevent this during your pregnancy.
  C)
  Essentially, experts don't really know why so many pregnant women develop high blood pressure.
  D)
  I'm sure this was hard for your friend, but rest assured that it won't affect your baby even if it affects you.