Which one of the following Viceroys announced a vague offer of 'domination status' for India in October 1929?

The Simon Commission had to face demonstration all over India and no party was in favour of the commission. So, in an effort to win the political parties Viceroy Lord Irwin announced in October 1929 a vague offer of 'dominion status' for India in an unspecified future and a Round Table Conference to discuss a future constitution.