Which statement describes how the labor market would change when workers are incentivized to provide their services, such as by improving working conditions?

A. This would lead to a decreased quantity of labor in the labor market
B. This would lead to a shift to the left in the market demand curve for labor
C. This would lead to a shift to the left in the market supply curve for labor
D. This would lead to decreased wages in the labor market

B. This would lead to a shift to the left in the market demand curve for labor