A nurse in a prenatal clinic is caring for a client who is at 12 weeks of gestation. The client asks about the cause of her heartburn. Which of the following responses should the nurse make?

Pressure from the growing uterus displaces the stomach.

Increased pancreatic activity results in intolerance of fat in the diet.

Increased progesterone production causes decreased motility of smooth muscle.

Increased estrogen production causes increased secretion of hydrochloric acid.