Which of the following statements about the first act of the Revolt of 1857 is/are true? 1. It occurred in Meerut, when two sepoys stole a superior officer's rifle. 2. It began when the Rani of Jhansi declared war on the British. 3. It began when Mangal Pandey fired at a European officer in Meerut. 4. It began when Mangal Pandey fired at a European officer in Barrackpore. Select the correct answer using the code give