C&A 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: Processing time per customer 2 seconds Activity Greet customer Take order Process order Deliver order 30 seconds. 60 seconds 5 seconds Assume demand is unlimited. Each employee is paid $7.50 per hour. If one additional employee is added to the bottleneck activity, what will be the cost of direct labor in $ per customer? Multiple Choice 0.125 0.3125