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: Surgery
[{'content': 'Incompletly descended testis is commonest on- \nSelect and explain. \nA. Right side, B. Left side, C. Both side, D. Right sided only', 'role': 'user'}, {'content': 'Answer: A \nExplanation: All these are complications of undescented testis.', 'role': 'assistant'}]