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': 'Fraction of drug that reaches in the blood is ? \nSelect and explain. \nA. T1/2, B. Absorption, C. Bioavailability, D. Elimination', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., Bioavailability "Bioavailability is a measure of fraction (F) of administered dose of a drug that reaches the systemic circulation".', 'role': 'assistant'}]