During Indian freedom struggle , a general strike jointly called by the Girni Kamgar Union and the Railway workers place in March, 1929 in bombay. This was actually in protest against ______

• the congress acceptance of Domination Status to India as a desirable interim goal
• the visit to india of Whiteley commission on Labour
• the Government's insistance on passing the Trade Disputes Bill through the Central Legislative Assembly
• the dismissal of workers who had taken part in the 1928 strikes