José Conseco, then a major league baseball star who had just signed a very large contract, said, "I don't think it's what I'm worth. It's what the market holds, what the organizations are willing to pay a player." He was really talking about

A. the substitution effect.
B. the income effect.
C. the primary labor market.
D. the secondary labor market.
E. economic rent.

E. economic rent.