The Supply Function for Good X Is Given by Q_x^s

The supply function for good X is given by Q_x^s = 200 + 4P_X - 3P_Y - 5P_W, where P_X is the price of X, P_Y is the price of good Y and P_W is the price of input W. If P_X = 500, P_Y = 250, P_W = 30, then the supply curve is

A) Q_x^s = 1300.
B) Q_x^s = -700 + 4P_x.
C) Q_x^s = -550 + 4P_x.
D) Q_x^s = 150 + 4P_x.