Nike Must Build a Factory at Either Millville or Greenfield $\le$

Multiple Choice

Nike must build a factory at either Millville or Greenfield, but not both.The appropriate linear constraint to express this restriction using binary variables Y₁ and Y₂ is:

A) Y₁ - Y₂ $\le$ 1
B) Y₁ + Y₂ $\le$ 1
C) Y₁ + Y₂ = 1
D) Y₁ - Y₂ $\le$ 0