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: Pathology
[{'content': 'Which of the following is not a feature of Peutz - Jegher Syndrome ? \nSelect and explain. \nA. Mucocutaneous  pigmentation, B. Autosomal dominant, C. Hamartomatous polyp, D. Gain of function mutation of LKB1 / STK11', 'role': 'user'}, {'content': 'Answer: D \nExplanation: It is due to loss of function mutation of LKB1 / STK11', 'role': 'assistant'}]