History · Modern History - Freedom Struggle

With reference to the Civil Disobedience Movement in India's freedom struggle, consider the following statements: I. The Civil Disobedience Movement was formally endorsed by the Indian National Congress at its Lahore Session in 1929. II. The movement involved deliberate defiance of specific colonial laws rather than mere institutional boycott. III. C. Rajagopalachari led the Vedaranyam Salt Satyagraha in the Madras Presidency. IV. The Qissa Khwani Bazaar episode in Peshawar witnessed firing by British forces on non-violent demonstrators during the movement. Which of the statements given above are correct?