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: Psychiatry
[{'content': 'Two months after knowing that his son was suffering from leukemia, a 45 year old father presents with sleep deprivation, lethargy, headache and low mood. He interacts reasonably well with others, but he absented himself from work. The most probable diagnosis is : \nSelect and explain. \nA. Depression, B. Psychogenic headache, C. Adjustment disorder, D. Somatization disorder', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The information in this question is :\n\nStressor (knowledge about medical disorder in a child).\nMild depressive symptoms → low mood, sleep deprivation\xa0but normal social interaction Symptoms within 3 months of stressor.\n\nThe diagnosis is adjustment disorder.', 'role': 'assistant'}]