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: Pediatrics
[{'content': 'Which of the following is not true regarding "thumb sucking" \nSelect and explain. \nA. Feels insecurity, B. Pleasurable sensation, C. Leads to dental problems, D. None', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is None', 'role': 'assistant'}]