What Is the Difference Between the Terms Course of Dealing

What is the difference between the terms course of dealing and course of performance?

A) Course of dealing references previous commercial dealings within the particular industry,while course of performance refers to the history of dealings between the parties in the particular contract at issue.
B) Course of performance references previous commercial transactions between the parties,while course of dealing refers to the history of dealings between the parties in the particular contract at issue.
C) Course of dealing references previous commercial transactions between the parties,while course of performance refers to the history of dealings between the parties in the particular contract at issue.
D) Course of dealing and course of performance are treated the same with regard to conforming and nonconforming goods.
E) Course of dealing is an exception to the perfect tender rule,while course of performance is not an exception to the perfect tender rule.