Auditors 1, 2, and 3 work out of various offices. Each must be assigned to one, and only one, of three audit locations (A, B, or C). The cost of sending each auditor to each location is listed below:

Audit Locations -

Auditor 1 -

A -

B -

C -

Auditor 2 -
$200
$300
$400

Auditor 3 -
$400
$300
$600

Auditor 4 -
$200
$200
$500
The minimum cost with which this assignment can be accomplished is: