This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
Which of the following is primarily bacteriostatic? 
Select and explain. 
A. Ciprofloxacin, B. Chloramphenicol, C. Vancomycin, D. Rifampicin
B: Chloramphenicol
Answer: B: Chloramphenicol 
Explanation: BASED ON TYPE OF ACTIVITY: Antimicrobial drugs is classified into: Primarily bacteriostatic: Sulfonamides, Erythromycin Tetracyclines ,Ethambutol Chloramphenicol ,Clindamycin Linezolid Primarily bactericidal: Penicillins, Cephalosporins Aminoglycosides ,Vancomycin Polypeptides, Nalidixic acid Rifampinl Ciprofloxacin Isoniazid, Metronidazole Pyrazinamide ,Cotrimoxazole ESSENTIALS OF MEDICAL PHARMACOLOGY K.D.TRIPATHI SIXTH EDITION PAGE NO:669