The correct option is B A, B, E, D, and C
It is very clear from the statements that C has the least capacity. Let us take the capacity of C as X
From III → Capacity of D = 2X
From IV → Capacity of E = 4X
From II → Capacity of B = 4.5X
From I → Capacity of A = 9X
The correct order of capacity in decreasing order is → A > B > E > D > C