The Word Cost-Effective as It Relates to the Definition of Logistics

The word cost-effective as it relates to the definition of logistics management implies that

A) while it is important to drive down logistics costs, all channel members must equally benefit financially or the chain will not function effectively.
B) speed of delivery must be measured against increased savings.
C) while it is important to drive down logistics costs, customer buying requirements must be a part of the equation.
D) the need for multiple carriers always results in lower profit margins and therefore should be avoided.
E) the choice of intermediaries should be made on their ability to perform their tasks efficiently even if additional costs must be passed on to the consumer.