Which of the following statements regarding control of service inventories is true?

Question $45$ options:

a$)$

Service inventory has carrying costs but no setup costs.

b$)$

Good personnel selection, training, and discipline are easy.

c$)$

Effective control of all goods leaving the facility is one applicable technique.

d$)$

Service inventory needs no safety stock, because there's no such thing as a service stockout.

e$)$

Service inventory is a fictional concept, because services are intangible.