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
[{'content': "First test for a couple presenting with infeility: March 2013 \nSelect and explain. \nA. Post coital test, B. Chromosomal studies, C. Sperm penetration test, D. Husband's semen analysis", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. D i.e. Husband's semen anaylsis", 'role': 'assistant'}]