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? Question 80 options: Each unit of service sold is most often not identical to other units. It is difficult to judge the quality of the product pre-purchase. Heterogeneity of services means the seller of services can standardize output. Heterogeneity of services creates special opportunities for salespeople. The individual seller of services cannot standardize their output