The Figure Above Shows the Demand and Supply Curves for High-Skilled

The figure above shows the demand and supply curves for high-skilled (indicated by an "H" subscript) and low-skilled (indicated by an "L" subscript) workers.
-In the figure above,the equilibrium wage differential between high-skilled workers and low-skilled workers is

A) zero.
B) $5.00 or less per hour.
C) between $5.01 and $10.00 per hour.
D) between $10.01 and $20.00 per hour.
E) more than $20.01 per hour.