The Usage of Trade Is a _____

The usage of trade is a _____.

A) pattern of behavior between parties showing how they intend their relationship to work
B) systematic and uniform conduct in which parties engage after they enter into a contract
C) customary way of doing business that may be used to inform the parties' contractual intentions
D) promise to pay a debt which need not be in writing if the promisor was motivated by a desire for advantage or benefit
E) contract term stating that the written agreement contains the parties' full understanding and intent