In Order to Be Successful in the Business Market,where Buyers

In order to be successful in the business market,where buyers are trained to identify suppliers as part of their jobs,salespeople:​

A) ​need not think of the buyers as purchasing agents.
B) need to possess increased levels of knowledge and expertise.
C) ​need not be thoroughly informed about their products.
D) ​need to adopt a very casual approach to selling.
E) ​need not provide a detailed assortment of applications for their products.