Select the most appropriate proverb that means the same as the underlined segment. They invested a huge amount in marketing the product, but it didn't succeed, making all their efforts go waste without any return.

Which movement aimed to promote Khadi, a hand-spun and handwoven cloth native to India?

Who were prominent leaders associated with the initial phase of the Telangana Rebellion (1946-1951) against the Nizam's rule and feudal landlords?

What was the immediate trigger for the Revolt of 1857?