Identify the incorrect statement.

• A
  $LH$ and $FSH$ trigger ovulation in the fallopian tube.
• B
  $LH$ and $FSH$ decrease gradually during the follicular phase.
• C
  $LH$ stimulates the secretion of androgens from the interstitial cells.
• D
  $FSH$ stimulates the Sertoli cells which help in spermiogenesis.