A minimization problem with four decision variables, two greater-than-or-equal-to constraints, and one equality constraint will have 1) 2 surplus variables, 3 artificial variables, and 3 variables in the basis 2) 4 surplus variables, 2 artificial variables, and 4 variables in the basis 3) 3 surplus variables, 3 artificial variables, and 4 variables in the basis 4) 2 surplus variables, 2 artificial variables, and 3 variables in the basis