One of the Challenges in Selling Services Is the Notion

One of the challenges in selling services is the notion of heterogeneity.Which of the following statements about the notion of heterogeneity is NOT true?

A) Each unit of service sold is most often not identical to other units.
B) It is difficult to judge the quality of the product pre-purchase.
C) Heterogeneity of services means the seller of services can standardize output.
D) Heterogeneity of services creates special opportunities for salespeople.
E) The individual seller of services cannot standardize their output.