Which of the following hormones is not a secretion product of the human placenta?

Human chorionic gonadotropin is released by synotiotrophoblesty. cells of the placenta. ​Estrogen and progesterone are also released by placental cells to maintain pregnancy. Prolactin is secreted from anterior lobe of pituitary. Placenta secretes Human Placental Lactogenic Factor which prepare mammary glands to secrete milk.