If a Company Selects Project 1 Then It Must Also $\ge$

Multiple Choice

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 $\ge$ 0
B) X₁ + (X₂ - X₃) $\le$ 0
C) X₁ + X₂ + X₃ $\le$ 2
D) X₁ - X₂ - X₃ $\le$ 0