In Order to See How the Labor Market Works as a Whole,we

In order to see how the labor market works as a whole,we need to:

A) add up all the supply curves of individual workers and the demand curves of individual firms to find market level supply and demand.
B) add up all the observed equilibrium wages across all individual markets and take the weighted average.
C) add up all the demand curves of individual workers and the supply curves of individual firms to find market level demand and supply.
D) None of these statements is true.