Which of the Following Is Not an Example of a Sharp

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

A) An attempt is made to influence a seller by leaving copies of bids, or other confidential correspondence, where a supplier can see them.
B) A concession may be forced by dealing only with "hungry" suppliers
C) Obscure contract terms of benefit to the supply manager's firm are buried in the small type of contract articles
D) A supplier lies about the production capability of his firm's facilities which leads to a long term contract that the supplier cannot fulfill
E) A supply manager may take advantage of a supplier who is short of cash and who may seek only to cover his/her out-of-pocket costs