A Woman in Her Second Trimester Comes for a Follow-Up

A woman in her second trimester comes for a follow-up visit and says to the nurse, "I feel like I'm on an emotional rollercoaster." Which response by the nurse would be most appropriate?

A) "How often has this been happening to you?"
B) "Maybe you need some medication to level things out."
C) "Mood swings are completely normal during pregnancy."
D) "Have you been experiencing any thoughts of harming yourself?"