$GnRH$ is a hypothalamic hormone essential for reproduction. It acts on the ....

• A
  Anterior pituitary gland and stimulates the secretion of $LH$ and oxytocin.
• B
  Anterior pituitary gland and stimulates the secretion of $LH$ and $FSH$.
• C
  Posterior pituitary gland and stimulates the secretion of oxytocin and $FSH$.
• D
  Posterior pituitary gland and stimulates the secretion of $LH$ and relaxin.