In Terms of Uniformity,which of the Following Is a Difference

In terms of uniformity,which of the following is a difference between services and goods?

A) Owing to customer non-participation,services are often linear,while goods are non-linear.
B) Services often involve a short-term,impersonal relationship between buyer and seller,while goods often involve a personal,long-term relationship.
C) Because of high involvement on the part of a buyer,services tend to be unique,with the quality likely to vary,while the quality and variance from standards of goods can be corrected before purchase.
D) Services can be inventoried uniformly,while goods face stockouts due to their heterogeneous nature.