This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neurotic, Stress Related and Somatoform Disorders, Subject name: Psychiatry
[{'content': 'Which of the following patient has the highest suicide risk: \nSelect and explain. \nA. A 60 year old male, who recently lost his wife and lives alone, B. A 42 year old female, who lives with family, C. A 42 year old female, who is single and lives alone, D. A 22 year old male, who is single', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Risk factors for suicide Sex: Males have higher suicide risks than females. Age: Old age is a risk factor for suicide. Poor social suppo is a risk factor.', 'role': 'assistant'}]