This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endometriosis & H, Subject name: Gynaecology & Obstetrics
[{'content': 'Most frequent symptom of adenomyosis: \nSelect and explain. \nA. Amenorrhea, B. Dysmenorrhea, C. Menorrhagia, D. Metrorrhagia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Symptoms of Adenomyosis are: Menorrhagia( mc) Progressive dysmenorrhea Infeility in young women Uterus is uniformly enlarged and <=14 weeks size of pregnant uterus(14 cm)', 'role': 'assistant'}]