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: Surgery
[{'content': 'Unilateral cleft lip is associated with - \nSelect and explain. \nA. Posterior displacement of alar cartilage, B. Columella elongated, C. Always cleft palate, D. Defective sucking', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]