In Order to Distinguish Sweet, Salty, Bitter, Sour, and Umami

Multiple Choice

In order to distinguish sweet, salty, bitter, sour, and umami tastes, humans have

A) three specialized types of taste receptors: salty/sweet, bitter/sour, and umami.
B) a specialized type of taste receptor for each of the five taste categories.
C) special locations on the tongue where each taste is processed.
D) nearly twice as many salty receptors as the other types of receptors combined.