Suppose the Market for Labor Is Perfectly Competitive and the Demand

Multiple Choice

Suppose the market for labor is perfectly competitive and the demand for labor is $L = 100 - 10 w$ and market supply is $L = - 20 + 10 w$ .If a minimum wage is imposed at w = 8,the net gain to all workers,not just those who keep their jobs,(in producer surplus terms) will be

A) 10
B) 20
C) 30
D) 40