Il' ' ' .I o I 1,, Consider the simplex tableau given below. (A) Which variables are basic variables? x1, x2, x3, and x3 5' X2, x3, 33, and z x2,x3, s1, and 2 s1, 32, $3, and x1 Which variables are nonbasic variables? e" x1, 51, and 52 x1, x3, and 51 x2, x3, and 53 x3. 53, and z (B) Find the basic feasible solution determined by setting the nonbasic variables equal to zero and then solving for the basic variables. x1 = D Determine the value of x1. l m