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': 'Drug resistance transmitting factor present in bacteria is : \nSelect and explain. \nA. Plasmid, B. Chromosome, C. Introns, D. Centromere', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Plasmids contain extra-chromosomal DNAs that help in transferring the genes responsible for multiple drug resistance among bacteria. These are therefore involved in the horizontal transfer of resistance. As it is not due to penicillinase, beta-lactamase inhibitors like clavulanic acid cannot reverse this resistance.', 'role': 'assistant'}]