The Constraint 3x₁ + 6x₂ ≥ 48 Is Converted to an Equality

Multiple Choice

The constraint 3x₁ + 6x₂ ≥ 48 is converted to an equality by

A) adding a slack variable.
B) subtracting a surplus variable.
C) adding both a slack variable and a surplus variable.
D) subtracting both a slack variable and a surplus variable.