One Reason That Pregnant Women's Metabolic Rates Change Is That

One reason that pregnant women's metabolic rates change is that the placenta secretes

A) human chorionic gonadotropin, which stimulates metabolism of glucose and raises metabolic rate.
B) human chorionic thyrotropin, which stimulates the thyroid gland and raises metabolic rate.
C) human placental lactogen, which stimulates glycolysis and raises metabolic rate.
D) human chorionic somatomammotropin, which inhibits fatty acid metabolism and lowers metabolic rate.
E) prolactin, which lowers metabolic rate so that nutrients can be stored in milk.