Which of the following functions would the nurse expect to be unrelated to the placenta

A．Production of estrogen and progesterone.

B．Detoxification of some drugs and chemicals.

C．Exchange site for food, gases, and waste.

D．Production of maternal antibodies.

广州历代名人辈出，代代相传，为广州名城的形成和发展做出了卓越的贡献。请说出其中三位名人的名字。