Correct answer: LH and FSH decrease gradually during the follicular phase.
The incorrect statement is the one claiming LH and FSH decrease gradually during the follicular phase. In reality, FSH helps stimulate Sertoli cells for spermiogenesis, LH triggers ovulation, and LH stimulates Leydig cells to secrete androgens; the follicular phase is characterized by rising estrogen and a mid-cycle LH surge, not a gradual fall of both gonadotropins.