This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Clinical Trials, Subject name: Pharmacology
[{'content': 'Pharmacovigilance is used for- \nSelect and explain. \nA. To monitor drug toxicity, B. To monitor unauthorized drug manufacture, C. Monitoring of students, D. Check costs', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., To monitor drug toxicity Pharmacovigilanceo Pharmacovigilance is the science and activities relating to detection, assessment, understanding and prevention of adverse effects or any other drug related problem.", 'role': 'assistant'}]