Consider four departments labeled A$,$ B$,$ C$,$ and D$.$ Each department is represented by a $1$ x $1$ square.

Initial layout, flow$-$between matrix and unit cost matrix are given below. Location of department $A$ is

fixed. Answer the following questions using CRAFT with two$-$way exchanges only.

a$)$ List all the department pairs that CRAFT would consider exchanging. $($Do not compute their

associated cost.$)$

b$)$ Compute the actual cost of exchanging departments $C$ and $D.$

Flow$-$Between Matrix

Initial Layout

Unit Cost Matrix