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': 'Best therapy suited to teach daily life skill to a mentally challenged child- \nSelect and explain. \nA. CBT (Cognitive Behaviour Therapy), B. Contigency, C. Cognitive reconstruction, D. Self instruction', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B. i.e. Contingency', 'role': 'assistant'}]