Maximize z = 3:61 + 251:2 + 2333 + 5174 subject to $1 + $2 + :53 + 354 5 7 2351 + 3532 + $3 {174 S 12 $1 2332 + 5123 + 354 S 10 $120, 33220, $3201 33420 After adding the slack variables 3:5, 9:6, and 937, the nal tableau at the end of simplex method is: 322100 $1I2$3$4$5$6 1E40-%%1%-% 3mi0i 037034010 3 0%%0%% (a) For k = 1, 2, 3, 4, nd the range of values for Ac;c for which the above solution remains optimal. (b) For k = 1, 2, 3, nd the range of values for Ab;c for which the above solution remains feasible