K.B, a 36-year-old woman who works as a social worker and has sole custody of her two children, is prescribed rifampin and isoniazid after being diagnosed with active TB.
Why is therapy for active infection always initiated with at least two drugs?
a) Because combining drugs increases the risk of adverse effects.
b) Because using multiple drugs simultaneously prevents the development of drug resistance.
c) Because rifampin and isoniazid are ineffective when used alone.
d) Because using only one drug at a time prolongs the treatment duration.