A Small Popular Restaurant at an Interstate Truck Stop Provides

Multiple Choice

A small popular restaurant at an interstate truck stop provides priority service to truckers.The restaurant has ten tables where customers may be seated.The service time averages 40 minutes once a party is seated.The customer arrival rate is 12 parties per hour,with the parties being equally divided between truckers and non-truckers.
-On average,how many parties of truckers are waiting to be seated?

A) 0 27
B) 0 52
C) 0 88
D) 1 36
E) 1 75