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': 'Fixation of anal phase of Psychosexual stage of development can lead to \nSelect and explain. \nA. Anxiety disorders, B. Depression, C. Obsessive compulsive disorder, D. Schizophrenia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Anal phase (1.5-3 years) child derives pleasure by holding and releasing faeces.\nArrest or fixation of this stage can lead to obsessive compulsive disorder in future.', 'role': 'assistant'}]