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: Unknown
[{'content': 'Which of the following is not a complication of PID? \nSelect and explain. \nA. Ectopic, B. Infertility, C. Pyometra, D. Endometritis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref. The Short Textbook of Obstetrics. Pg 120\n\xa0\nComplications of PID\n\nInfertility –tubal obstruction from low grade salpingitis\nEctopic pregnancy\nChronic pelvic pain\nRecurrences\nAbscess formation', 'role': 'assistant'}]