Critical Reasoning (CR) | Dentist: I recommunend brushing one 's teeth after every meal to remov

Dentist: I recommunend brushing one 's teeth after every meal to remove sugars that facilitate the growth of certain bacteria; these bacteria produce acid that dissolves minerals in tooth enamel, resulting in cavities. And when brushing is not practical, I recommend chewing gum - even gum that contains sugar - to prevent the formation of cavities.

Which one of the following, if true, would most help to reconcile the dentist's apparently paradoxical recommunendations?

(A) A piece of chewing gum