Consider the graph below. Assume that a union enters the labor market. What effect does the union have on the quantity of labor supplied? Will this result ina shift of the supply curve? * The quantitysupplied rises. The supply curve shifts to the right. * The quantitysupplied falls. The supply curve shifts to the right. * The quantity supplied rises. There is no shift of the supply curve. * The quantitysupplied falls. There is no shift of the supply curve