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A 22-year-old woman presents to the clinic for a recurrent urinary tract infection. She is prescribed trimethoprim/sulfamethoxazole.
What is the mechanism of action of this antimicrobial drug?

A - Inhibition of bacterial cell wall synthesis
B - Inhibition of folic acid synthesis
C - Inhibition of bacterial protein synthesis
D - Inhibition of mycolic acid synthesis
E - Inactivation of bacterial toxins

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