The Demand Curve for High- Skilled Labour Lies to the Right

The demand curve for high- skilled labour lies to the right of the demand curve for low- skilled labour because

A) high- skilled workers require more compensation to convince them to work than do low- skilled workers.
B) there are more high- skilled workers than low- skilled workers.
C) high- skilled labour is more productive than low- skilled labour.
D) firms need not be concerned with the minimum wage in the market for high- skilled labour.