During a Recent Recession,many Manufacturers Determined That Their Suppliers Were

During a recent recession,many manufacturers determined that their suppliers were an excellent source of cost savings.Specific cost reduction strategies manufacturers have used with their suppliers include:

A) offering help in boosting productivity of suppliers.
B) renegotiating contracts.
C) setting annual across-the-board cost reduction targets for suppliers.
D) improving economies of scale by cutting number of suppliers.
E) all of the choices.