Select the option which correctly matches the endocrine gland with its hormone and its function.

• A
  Placenta $\Rightarrow$ Estrogen $\Rightarrow$ Initiates secretion of the milk
• B
  Corpus luteum $\Rightarrow$ Estrogen $\Rightarrow$ Essential for maintenance of endometrium
• C
  Leydig's cells $\Rightarrow$ Androgen $\Rightarrow$ Initiates the production of sperms
• D
  Ovary $\Rightarrow$ $FSH$ $\Rightarrow$ Stimulates follicular development and the secretion of estrogens