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 Barraekpore. Select the correct answer using the code given below:2 only 1, 2 and 3 only4 only1 and 4 only