If a type of bacteria can grow on minimal medium containing streptomycin , what can be the probable reason for this action ?

Options

A. A gene was already present in bacteria which detoxify the action of streptomycin
B. On growing in the medium the bacteria acquire the resistance against streptomycin
C. They secrete enzymes against streptomycin
D. Bacteria have cell wall , so streptomycin cannot work against it

Answer

A