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If a company selects Project 1 then it must also select either Project 2 or Project 3. Which of the following constraints enforces this condition?
If a company selects Project 1 then it must also select either Project 2 or Project 3. Which of the following constraints enforces this condition?
a. X1 ? X2 ? X3 ? 0
b. X1 + (X2 ? X3) ? 0
c. X1 + X2 + X3 ? 2
d. X1 ? X2 ? X3 ? 0
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