Robotic Technology Is a Substitute for Labour in Many Manufacturing

Robotic technology is a substitute for labour in many manufacturing processes. If the price of robotic technology decreases and the scale of the firm's production does not change, there is

A) a decrease in the demand for labour.
B) an increase in the demand for labour.
C) a decrease in the supply of labour.
D) an increase in the supply of labour.
E) no change in the demand for labour.