Which of the Following Statements About Single- and Limited-Line Stores

Which of the following statements about single- and limited-line stores is true?

A) Many are small,with high expenses relative to sales.
B) They usually believe in a "buy low and sell high" philosophy.
C) Such stores face the costly problem of having to stock some slow-moving items in order to satisfy their target markets.
D) Most conventional retailers are single- or limited-line stores.
E) All these answers are correct.