This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Which is NOT a documentation test for ovulation in women of reproductive age? 
Select and explain. 
A. Fern test, B. Basal body temperature, C. Hysteroscopy, D. LH surge
C: Hysteroscopy
Answer: C: Hysteroscopy 
Explanation: Methods to document ovulation: Luteinizing Hormone Monitoring Documentation of the LH surge represents a remarkable reproducible method of predicting ovulation. Ovulation occurs 34 to 36 hours after the onsof the LH surge and about 10 to 12 hours after the LH peak. Basal Body Temperature Midluteal Serum Progesterone Ultrasound Monitoring Ovulation A ferning pattern is seen when periovulatory cervical mucus is spread and dried on a microscope slide.