In Which of the Following Situations Would You Expect to Find

In which of the following situations would you expect to find the purchase requiring joint decision making?

A) A German company decides to spend $30 million on a new manufacturing facility in Georgia
B) An owner of a hair salon purchases a replacement chair for the salon
C) The supplies manager for a large law firm reorders stationery for the firm from its fixed supplier
D) A small regional department store upgrades its security system and sends one of its employees to a seminar on "Safety First"