Harrington Corporation produces three products, A, B, and C. Pertinent information on these products is as follows:

Product	Selling Price per Unit	Variable Cost per Unit	Fixed Cost per Unit	DL Hours per Unit
A (Anchor bolts)	$4.00	$1.00	$2.00	2
B (Bearings)	$3.50	$0.50	$2.00	2
C (Castings)	$6.00	$2.00	$3.00	3

There are 150 direct labor hours available. Machine-hour capacity allows 100 anchor bolts, only; 50 bearings, only; 40 casters, only; or any combination of the three that does not exceed the capacity. The direct labor hour constraint for Harrington's linear programming model is:

A + B + C 150.

Min Z = 2A + 2B + 3C.

Max Z = 2A + 2B + 3C - 150.

100A + 50B + 40C 1,050.

2A + 2B + 3C 150.