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: Pharmacology
[{'content': 'Which of the following is a mucolytic \nSelect and explain. \nA. Lignocaine, B. Aprepitant, C. Codeine, D. Ambroxol', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ambroxol & Bromhexine make the mucus less viscid & act as mucolytics.', 'role': 'assistant'}]