Mary knows that Akua and Dominik have a shared personal history, as a result of which the two men do not work well together. Mary assigns the two men separate work areas. She is controlling conflict by

a$.$ expanding the resource base.

b$.$ using appropriate coordination techniques.

c$.$ focusing employees' attention on higher$-$level goals.

d$.$ matching personalities and work habits of employees.

e$.$ increasing competition among individuals.