The supply function for good X is given by Qxs = 1,000 + PX - 5PY - 2PW, where PX is the price of X, PY is the price of good Y, and PW is the price of input W. If the price of input W increases by $20, then the supply of good X:


will increase by 20 units.


will increase by 40 units.


will decrease by 20 units.


will decrease by 40 units.