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': 'The persistent suppression of bacterial growth that may occur after limited exposure to some antimicrobial drug is called : \nSelect and explain. \nA. Time dependent killing, B. Post antibiotic effect, C. Concentration dependent killing, D. Sequential blockade', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Time dependent killing kinetics is shown by aminoglycosides. Here, the killing activity depends upon the length of time, plasma concentration is above MIC.\nConcentration dependent killing is shown by β lactam drugs. Here, killing activity depends upon the ratio of plasma concentration to MIC.\nPost-antibiotic effect is the suppression of bacterial growth after limited exposure to the antibiotic.', 'role': 'assistant'}]