The Client Recently Diagnosed with Tuberculosis Asks the Nurse Why

The client recently diagnosed with tuberculosis asks the nurse why so many different pills are required to treat the infection.The nurse bases the response on the knowledge that:

A) Treatment is a trial-and-error process,and it will take 14 days for the appropriate drug to be identified.
B) Mycobacteria grow slowly and often develop resistance during the course of treatment.
C) It is difficult for a single drug to break down the cysts that are formed by the tubercle.
D) The client might have a genetic difference that requires multiple dosing.