Levon, a Hairstylist at a Salon in Portland, Styles His

Levon, a hairstylist at a salon in Portland, styles his customers in various ways. His work looks different on different people even though he has styled all of them. This unique character of a service that is unique for every customer as it is individually produced is referred to as

A) tangibility.
B) separability.
C) durability.
D) heterogeneity.
E) divisibility.