When Labour Productivity Decreases, the

When labour productivity decreases, the

A) supply of labour curve shifts rightward and the real wage rate fall.
B) demand for labour curve shifts leftward and the real wage rate falls.
C) demand for labour decreases and the supply of labour decreases, and the real wage rate rises, falls, or remains unchanged.
D) supply of labour curve shifts leftward and the real wage rate rises.
E) demand for labour decreases and the supply of labour increases, and the real wage rate falls.