This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnosis of Pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'Most conclusive sign of ovulation is: \nSelect and explain. \nA. TVS follicular study, B. Basal body temperature, C. Ferning pattern of cervical mucus, D. Pregnancy', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Pregnancy Various methods used to detect ovulation are:A) Indirect methods:1. Menstrual history2. Evaluation of end organ changes:# BBT# Cervical mucus study# Vaginal cytology# Hormonal estimation# Sr progesterone# Sr. estradiol# Sr LH# URINARY LH# Endometrial biopsy3. USG FOLLICULAR STUDY (TVS preferred)B) Direct:1. LaparoscopyC) Conclusive:1. Pregnancy", 'role': 'assistant'}]