The economy's labor market is described by the following labor demand curve, ND(w)=100−5w, and the following labor supply curve. N5(w)=−50+5w, where w is the real wage. A positive productivity shock shifts the labor demand curve to ND(w)=110−5w. How does this shock affect the equilibrium real wage? A. real wage increases by $1 B. real wage falls by $1 C. real wage increases by 10% D. real wage falls by 10%.