Table 13-5 -According to the Information Provided in Table 13-5, Which Presents

Table 13-5
-According to the information provided in Table 13-5, which presents the solution for a queuing problem with a constant service rate, what percentage of available service time is actually used?

A) 0.217
B) 0.643
C) 0.321
D) 0.179
E) None of the above