<prompt> Which of the following is a broad spectrum antibiotic?ErythromycinStreptomycinTetracyclineAll  <response>: Spectrum of activity: Narrow-spectrum Penicillin G,Streptomycin,Erythromycin Broad-spectrum Tetracyclines,Chloramphenicol ESSENTIALS OF MEDICAL PHARMACOLOGY K.D.TRIPATHI SIXTH EDITION PAGE NO:669 