This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
[{'content': 'Agent which on addition to a colony inhibits its growth and on removal the colony regrows is - \nSelect and explain. \nA. Bacteriostatic, B. Bactericidal, C. Antibiotic, D. Antiseptic', 'role': 'user'}, {'content': 'Answer: A \nExplanation: They prevent the multiplication of bacteria but however they remain alive. Few antibiotics such as tetracycline,sulphomethoxazole REF:Textbook of microbiology, Ananthanarayan and Paniker. Page no.: 28 Tara textbook of pharmacology', 'role': 'assistant'}]