In a Market Economy,the High Salaries of Some Star Baseball

In a market economy,the high salaries of some star baseball players such as Adrian Gonzalez,are determined by

A) team owners, based on the total number of star athletes they plan to hire.
B) advertising companies, based on what they are willing to pay to advertise their products at baseball games.
C) the interaction of the demand for star athletes and the supply of star athletes.
D) consumers, based on their willingness to watch baseball games.