Which of the Following Is Not an Example of a Sharp

Which of the following is not an example of a sharp practice?

A) A supply manager talks in terms of large quantities to encourage a price quote on that basis
B) A sales person buys lunch for a buyer in the hope that the buyer will be influenced to buy his or her goods and services
C) A large number of bids are solicited in hope that the buyer will be able to take advantage of a quotation error
D) Bids are obtained from unqualified suppliers that the supply manager would not patronize in any case
E) A supply manager who places in competition the prices of seconds, odd lots, or distress merchandise misrepresents a market