Which Statement Regarding Responsive Supply Chains Is Most Accurate

Which statement regarding responsive supply chains is most accurate?

A) responsive supply chains use slower modes of transportation but faster order processing.
B) responsive supply chains often rely on more expensive express transportation.
C) responsive supply chains always use the least expensive mode of transportation possible.
D) responsive supply chains rely on maintaining large inventory warehouses.
E) responsive supply chains achieve economies of scale by having all inventory stored and sorted at a central location.