Two employees cover two shifts at a small restaurant, the inter-arrivals of customers follow a Poisson distribution with a rate of 4 customers per hour. The first employee service time follow a normal distribution with mean of 3 minute and standard deviation of 2 minute, while the second employee service times follow a normal distribution with mean 6 minutes and standard deviation of 1 minute. The expected waiting time in queue during each shift is: (2 Points) a. 10 and 13.4 0. 10 and 34 c. 134 and 10 Od 3.4 and 10Two employees cover two shifts at a small restaurant, the inter-arrivals of customers follow a Poisson distribution with a rate of 4 customers per hour. The first employee service time follow a normal distribution with mean of 3 minute and standard deviation of 2 minute, while the second employee service times follow a normal distribution with mean 6 minutes and standard deviation of 1 minute. The expected waiting time in queue during each shift is: (2 Points) a. 10 and 13.4 0. 10 and 34 c. 134 and 10 Od 3.4 and 10