What are the three local factors needed for caries to develop?

A) Cariogenic bacteria, dietary fibers, and a susceptible tooth
B) A susceptible tooth, cariogenic bacteria, and fermentable carbohydrates
C) A susceptible tooth, proteins, and fermentable carbohydrates
D) Cariogenic bacteria, gingival inflammation, and fermentable carbohydrates

B
Explanation: B) Dental caries is a diet-related, infectious, and transmissible disease. Clinical caries is contingent upon the interaction of three local factors in the mouth: a susceptible tooth, cariogenic bacteria, and fermentable carbohydrates.