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: Forensic Medicine
[{'content': "Mental ability to make valid will is - \nSelect and explain. \nA. Vicarious liability, B. Curren's rule is basis for this, C. Testamentary capacity, D. Mc Naughten's rule", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]