A company has a store which is manned by 1 attendant who can attend to 8 technicians in an hour. The technicians want in the queue and they are attended on first-come-first-served basis. The technicians arrive at the store on an average 6 per hour. Assuming the arrivals to follow Poisson and servicing to follow exponential distribution, what is the expected time spent by a technician in the system, what is the expected time spent by a technician in the queue and what is the expected number of technicians in the queue?

• A. 22.5 minutes, 30 minutes and 2.75 technicians
• B. 30 minutes, 22.5 minutes and 2.25 technicians
• C. 22.5 minutes, 22.5 minutes and 2.75 technicians
• D. 30 minutes, 30 minutes and 2.25 technicians