In the Context of Purchase-Type Influences on Organizational Buying,why Do

In the context of purchase-type influences on organizational buying,why do organizations use the straight rebuy approach to purchasing?

A) Because it is fast and requires relatively few employees
B) Because it allows marketers to learn about the needs of the organizations in their target market
C) Because it is used for purchasing big-ticket items
D) Because it involves a large number of decision makers