Who persuaded Gandhiji to come to Champaran to investigate the problems of Indigo workers?

With reference to the Champaran Satyagraha (1917), consider the following statements: Slideshare + 11. It was primarily a protest against the forced cultivation of indigo under the Tinkathia system. 2. Mahatma Gandhi was appointed as a member of the official Champaran Agrarian Enquiry Committee set up by the government. Which of the statements given above is/are correct?

Match List-I (Elements of the Champaran Satyagraha) with List-II (Corresponding Facts): List-I a. Tinkathia fraction b. Key Legal Assistants c. Resulting Act d. Satyagraha Year List-II1. Rajendra Prasad and Anugrah Narayan Sinha2. 19173. Champaran Agrarian Act (1918)4. 3/20 of land