Suppose That the First Goal in a GP Problem Is $\le$

Suppose that the first goal in a GP problem is to make 3 X₁ + 4 X₂ approximately equal to 36. Using the deviational variables d₁^- and d₁⁺, what constraint can be used to express this goal?

A) 3 X₁ + 4 X₂ + d₁^- -d₁⁺ $\le$ 36
B) 3 X₁ + 4 X₂ -d₁^- - d₁⁺ = 36
C) 3 X₁ + 4 X₂ + d₁^- + d₁⁺ = 36
D) 3 X₁ + 4 X₂ + d₁^- - d₁⁺ = 36