This is the most stupid question someone ever ask to candidate, as the guy taking interview has himself not done planning. BBD is driven by demand and supply with unlimited number of variables and scenarios. There is no at the moment right answer to this as boundary conditions may not be known before joining or knowing how Flikart works. This simple thing they won't understand and they will waste your time as showing themselves that how Guru they are. Moreover, you can give a shot to interview and have similar opinion unless someone refers you internally.