LH peak occurs how many hours before ovulation ?: (A) 36-48 hrs., (B) 12-24 hrs., (C) 48-72 hrs., (D) 72-96 hrs.
Answer is A. Ans.B.)12-24 hours Ovulation occurs 34 to 36 hours after the onset of the LH surge and about 10 to 12 hours after the LH peak.