<prompt> All are true regarding LH surge exceptLH surge acts rapidly on both granulosa and theca cells of preovulatory follicleLH surge initiates re - entry of oocyte into meiosisOvulation occurs 24 hours after LH surgeMean duration of LH surge is 48 hours  <response>: Ovulation occurs 36 to 40 hours after the onset of LH surge. 