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Which of the following ways are suitable for increasing food production?
I. The yield of crops can be increased due to use of improved variety of crops and use of agrochemicals.
II. The use of manure, biofertilisers, biopesticides and biocontrol agents to increase the crop production.
III. The use of genetically modified crops to increase the crop production.
Choose the correct option.
(a) I and II
(b) I and III
(c) II and III
(d) All of these

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