[A] Its a new method of agriculture in which crops are cultivated inside multi-storey buildings
[B] Its a new method of agriculture in which various unrelated crops are grown together in same tract of land
[C] Its a new method of agriculture in which various closely related crops are grown together in same tract of land
[D] In Vertical farming , many systems such as aquaculture, sericulture, pisciculture and bee culture are altogether used for better use of land and resources