In His Study of Store Clerks in New York City

In his study of store clerks in New York City, William Labov discovered that increased pronunciation of the letter "r" in words like car, floor, and fourth:

A) shows that the English language has more than twenty known dialects.
B) depended on how adept employees were at code switching.
C) was related to the prestige of the store and higher prices.
D) was closely tied to how these words were pronounced in Boston.
E) had no relationship to the prestige of the store.