Which of these constraints would not be appropriate for this scenario?
The landlord uses the following scheme for decision variables:
x1 = contractor works on wood floors x2 = landlord works on wood floors
x3 = contractor works on kitchen tile x4 = contractor works on kitchen tile
x5 = contractor works on back door x6 = contractor works on back door
x7 = contractor works on garage door x8 = contractor works on garage door
A) 2700x1 + 400x2 + 2500x3 + 1000x4 + 600x5 + 250x6 + 350x7 + 400x8 ? 3000
B) 1x1 + 2x2 + 1.5x3 + 3x4 + 0.5x5 + 1x6 + 0.25x7 + 0.5x8 ? 4
C) x3 + x4 = 1
D) x1, x2, x3, x4, x5, x6 , x7, x8 ? 0 and integer
Answer: D
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