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 given below: