Answer the Following Questions Using the Information Below

Multiple Choice

Answer the following questions using the information below:
The tool crib at a large manufacturing company is responsible for providing tools to the factory workers on demand. The tool crib has a variable demand. Historically, its demand has ranged from 300 to 500 small tools per day with an average of 400. Diane, the tool crib attendant, works eight hours a day, five days a week. Each order is for one small tool and each small tool takes Diane 1 minute to retrieve from the bins.
-What is the average waiting time,in minutes?

A) 1.0
B) 1.5
C) 2.5
D) 3.5