What is the overall effect of the last sentence of the passage?

A. The final sentence of the passage ends the last day before the strike, suggesting that the worker will definitely be fired after the strike.
B. The final sentence of the passage sets the reader up for a change, just as workers were facing change in a new technical age
C. The question at the end of the text shows that the worker was uncertain when taking risks with unions and strikes.
D. The question at the end of the text emphasizes the workers' confusion as to what a union is and will accomplish.