Triclosan Is a Common Antibiotic Used in Antiperspirants, Toothpastes, and Antibacterial

Triclosan is a common antibiotic used in antiperspirants, toothpastes, and antibacterial soaps. You are a doctor studying the evolution of bacterial resistance to triclosan. You need to find a population of nonresistant bacteria. Where should you look?

A) In areas with low percentages of bacterial infection
B) In areas where triclosan-containing products are used frequently
C) In areas where bacteria are usually not found
D) In areas where these triclosan-containing products have not been used