Identify the incorrect statement: (A) Hydroponics involves the culture of plants in soilfree, de...

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Identify the incorrect statement:
(A) Hydroponics involves the culture of plants in soilfree, defined nutrient medium.
(B) Julius von sachs cultured plants in a defined nutrient solution in the complete absence of soil.
(C) Hydroponics is useful for the commercial production of vegetables.
(D) Proper aeration of solution is not needed during hydroponics.
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