-The Figure Above Shows a Local Lawn Cutting Service's Demand

-The figure above shows a local lawn cutting service's demand for labor curve when the price of cutting an acre of lawn is $50 per acre. If the wage rate rises from $100 per day to $200 per day, the firm's demand for labor curve

A) shifts leftward.
B) shifts rightward.
C) does not shift at all, but the firm moves upward along the curve.
D) None of the above because this change shifts the supply of labor curve.