Q) Consider the following transportation problem: A A B c E Supply From F1 30 3 2 4 3 F2 40 10 4 9 6 F3 55 6 4 8 2. Demand 15 20 40 50 Then each of the following is true except: a. The number of steps for improving the solution to be optimal is at most one time. O b. The initial solution by applying the north west corner method is: X11=15, X12=15,X22=5,X23=35,X33=5,X34=50 and Xij=0 otherwise O C. None of the above O d. The optimal solution is: X11=10, X13=20,X22=20, X23=20,X31=5, X34=50 and Xij=0 otherwise