|Que.||At which of the following stage(s), the degeneracy do not occur in transportation problem?
(m, n represents number of sources and destinations respectively)
(a) While the values of dual variables ui and vj cannot be computed.
(b) While obtaining an initial solution, we may have less than m + n -1 allocations.
(c) At any stage while moving towards optimal solution, when two or more occupied cells with the same minimum allocation become unoccupied simultaneously.
(d) At a stage when the no. of +ve allocation is exactly m + n - 1.
|a.||(a), (b) and (c)|
|b.||(a), (c) and (d)|
|c.||(a) and (d)|
|d.||(a), (b), (c) and (d)|
|Answer:(a) and (d)|