Choose the sentence/s that is/are true regarding the Kapiriggama cascade system.
I. Kapiriggama cascade system has been instrumental in enabling farmers from 11 villages to engage in rice cultivation even during periods of drought.
II. The Kapiriggama cascade system helped in the enhancement of crop yields, which permitted residents to cultivate 30 acres of crops other than rice.
III. The study in 2016 explained the restoration of the Kapiriggama cascade system.

I. Kapiriggama cascade system has been instrumental in enabling farmers from 11 villages to engage in rice cultivation even during periods of drought.: This statement is true and mentioned in the passage. The Kapiriggama cascade system helped farmers in 11 villages cultivate rice during drought months. II. The Kapiriggama cascade system helped in the enhancement of crop yields, which permitted residents to cultivate 30 acres of crops other than rice.: In the passage, it is mentioned that rehabilitation of the Thumbulla tank system in northwestern Sri Lanka helped not Kapiriggama cascade system. III. The study in 2016 explained the restoration of the Kapiriggama cascade system.: This statement is not mentioned in the passage. The passage does not refer to a study conducted in 2016 explaining the restoration of the Kapiriggama cascade system.