Who was the mastermind of bomb attack on Lord Hardinge at chandani chowk in Delhi in 1912?

Who was the mastermind of bomb attack on Lord Hardinge at chandani chowk in Delhi in 1912? Correct Answer Rasbihari Bose

On the crisp morning of 23 December 1912, Delhi was decked up to welcome the then Viceroy Lord Hardinge on the occasion of the capital’s transfer from Calcutta to Delhi. At a building in Chandni Chowk, a petite woman could be seen waiting with the crowd to see the Viceroy, and then a bomb exploded.Basant Biswas, a young boy of 16 years, had dressed up as a woman and thrown a crude bomb at the elephant carrying the Viceroy. Hardinge escaped with injuries. Rash Behari was the mastermind behind the attack and helped make the bomb. After the blast, Bose went back to his government job at the Forest Research Institute and even organised an honorary reception for Hardinge a few months later.