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:

Activity Processing time per customer

Greet customer $2$ seconds

Take order $30$ seconds

Process order $60$ seconds

Deliver order $5$ seconds

Assume demand is unlimited. To which activity should C&A assign an additional employee in order to increase process capacity?

Multiple Choice

Greet customer

Take order

Process order

Deliver order