16

Consider the transportation data set for a distribution problem below.

From \ to	Dest 1	Dest 2	Dest 3	Dest 4	Total Supply
Plant 1	$14	$15	$12	$11	130
Plant 2	$10	$16	$7	$23	80
Plant 3	$19	$8	$12	$24	105
Total Demand	80	75	90	65

Which of the following is true about the supply constraints in this problem? (choose all that apply)

		One of the supply constraints is x21 + x22 + x23 + x24<= 80
		There are 4 supply constraints.
		One of the supply constraints is x12 + x22 + x32 = 90
		One of the supply constraints is x21 + x22 + x23 + x24 >=80
		One of the supply constraints is x12 + x22 + x32 <= 90
		There are 3 supply constraints.