A Diabetic Patient Is 1 Day Postpartum After an Uncomplicated

A diabetic patient is 1 day postpartum after an uncomplicated vaginal birth.She wants to know why her blood sugar levels are so much lower than usual.What explanation by the nurse is best?

A) "Because you are dehydrated, your blood sugar decreases for a few days."
B) "I will call the dietician to see if you are getting enough calories."
C) "The levels of hormones that cause an anti-insulin effect are decreased."
D) "The exertion from childbirth is like a massive workout for your body."