Step 1: Define constraints in linear programming
Constraints are conditions or restrictions placed on decision variables (e.g., \( x, y \)) within a linear programming problem. They generally signify limitations related to resources or other requirements.
Step 2: Identify from options
(A) Feasible solutions: These satisfy all constraints but are not the constraints themselves.
(B) Constraints: These are restrictions on decision variables, and this option correctly identifies them.
(C) Optimal solutions: These optimize the objective function but are not constraints.
(D) Infeasible solutions: These do not meet all constraints.
Step 3: Conclude the result
Such restrictions are termed constraints.