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': 'Nicotinic acid acts by - \nSelect and explain. \nA. Nicotinic acid acts by -, B. Inhibiting HMG-CoA synthatase, C. Inhibiting HMG CoA reductase, D. Decreasing absorption of cholesterol', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Inhibiting lipolysis o Niacin (Nicotinic acid) inhibits intracellular lipolysis by inhibiting hormone sensitive lipase --> intracellular FFA to liver --> triglyceride synthesis.", 'role': 'assistant'}]