) Table 1 shows the initial tableau to a normal minimization LP problem, with two decision variables (i.e. X1, X2 ) and three slack variables (i.e. S1, S2, S3). Table 1: Z S1 RHS X1 1 X2 1 S2 0 S3 0 1 0 0 0 -2 -1 1 0 0 -6 -7 0 -3 -1 0 1 0 0 -1 -3 0 0 1 -8 Determine its optimal solution using the dual simplex method. Also give optimal solution to the dual variables. (15)