In a hospital emergency department, the emergency services, emergency room, and recovery teams are technically independent, but their activities are interdependent. This is an example of a$($n$)\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$

A$.$

work team

B$.$

multiteam system

C$.$

problem$-$solving team

D$.$

project team

E$.$

cross$-$functional team