a=5 , b=5 , c=5 , d=6 Solve on paper please

1) The following is a simplex table for a linear programming model. Complete this table, fill in the "?" marks and then complete the next iteration (table). Finally, indicate if it is optimal and explicitly state any irregularities detected during the process. (40 Points) a b 0 0 M Basic Variables Quantity X1 X2 X3 Si S2 A1 a X1 AI M 0 a*b b*c c*d ? S2 1 0 0 ? ? b/c 1 -c/a ? ? c/d 0 3/5 ? ? 5/3 0 d/b / ? ? 0 0 1 ? ? 0 1 0 ? ? Zj Zi-ci