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': 'The test for detecting anti sperm antibodies : \nSelect and explain. \nA. Post-coital test, B. Palm-leaf test, C. Fern test, D. Spinn Barkie test', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Post-coital test', 'role': 'assistant'}]