In which of the following year the Gandhi–Irwin Pact was signed?

The Gandhi–Irwin Pact was a political agreement signed by Mahatma Gandhi and the then Viceroy of India, Lord Irwin on 5 March 1931 before the second Round Table Conference in London. The two main clauses of the pact entailed; Congress participation in the Round Table Conference and cessation of The Civil Disobedience Movement.