please The answer must not be handwritten

Q15: Dongguk Fast Food has four activities in serving a customer: greet customer, take order, process order, and deliver order. Each activity is staffed by one employee (for a total of four employees). The processing time for each activity is given as follows: Assume demand is unimited. Which of the following conciusions can drawn? a. Adding two employees at the current bottleneck activity will not increase the process capacity more than adding one employee. b. Adding one employee at a popbottleneck activity will cause a larger decrease in the cost of direct labor than adding one employee at the bottleneck activity. c. Adding two employees at the current bottleneck activity is the minimum change in manpower necessary to increase process capacity. d. Adding two employees at the current bottleneck activity will increase average labor utilization more than adding, one employee