In the Production and Sale of Industrial Services, Productive Capacity

In the production and sale of industrial services, productive capacity is often a substitute for inventory. In other words, capacity will reflect the level of demand which the service provider can meet. This is primarily in response to which service characteristic?

A) perishability
B) lack of ownership
C) nonstandardized output
D) simultaneous production and consumption
E) the extent to which tangible elements dominate intangible elements