A Consultant Needs to Locate Four Departments-Waiting Room (W),checkup Room

Multiple Choice

A consultant needs to locate four departments-waiting room (W) ,checkup room (c) ,laboratory (L) ,and exercise room (E) -in four areas (I,II,III,IV) of a new facility.He wants to minimize interdepartmental transportation costs associated with the nurses escorting patients,which he expects to be $.10 per patient per metre.He has prepared the following distance and flow matrices: How many different process layouts are possible for this new facility?

A) 4
B) 6
C) 16
D) 24
E) 120