The General and Likely Purpose of a (Labor) Strike Is

The general and likely purpose of a (labor) strike is to convince management that

A) the supply curve of labor is what the union says it is.
B) the demand curve (for the product they sell) is what the union says it is.
C) workers have a higher marginal physical product than the management think they (the workers) have.
D) it is not in their best interest to raise the prices of the product they sell.
E) none of the above