The supply at three sources is 50, 40 and 60 units respectively whilst the demand at the four destinations 20, 30, 10 and 50 units. In solving this transportation problem
1
A dummy source of capacity 40 is needed
2
A dummy destination of capacity 40 is needed
3
No solution exists as problem is infeasible
4
No solution exists as problem is degenerate
5
Not Attempted