Which of the Following Statements Is True with Regard to Government

Which of the following statements is true with regard to government agencies as a group of organizational buyers? 

A)  Governmental agencies operating at state and local levels are not authorized to make any type of purchases except straight rebuys.
B)  The federal government is considered to be the world's biggest consumer as it spends vast amounts on machinery, equipment, facilities, supplies, and services.
C)  Marketing to government agencies is relatively simple compared to the other types of organizational buyers as purchasing policies and regulations are relaxed once a supplier becomes familiar.
D)  Governmental agencies typically do not go through all the four stages of the organizational buying process.