This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharmacokinetics, Subject name: Pharmacology
[{'content': 'What does the plasma concentration versus time graph indicates - \nSelect and explain. \nA. Half life, B. Clearance, C. Elimination, D. Bioavailability', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Bioavailability o The extent of systemic bio availability is ordinarily calculated by relating the area under plasma concentrationtime curve after a single oral dose to that obtained after iv administration of the same amount (by which route a drug is 100% available).", 'role': 'assistant'}]