History · Modern Indian History - Civil Disobedience Movement

With reference to the Civil Disobedience Movement (1930–34), consider the following statements: I. The movement signified a transition from limited constitutional protest to mass resistance against colonial authority. II. In the North-West Frontier Province, the Khudai Khidmatgar organisation led by Khan Abdul Ghaffar Khan supported the movement through non-violent mobilisation. III. The movement witnessed both symbolic acts such as salt manufacture on the coast and wider campaigns including no-revenue and no-chowkidari agitations in several regions. IV. C. Rajagopalachari led a notable Salt March in the Madras Presidency, extending the movement to southern coastal regions. Which of the statements given above are correct?