21. Which of the following statements istrueconcerning the economics ofdiscrimination practiced by Major League Baseball until 1947?

1. Discrimination led to more profit when it is based on the desires of players and was directed against undesirable applicants.
2. Led by Branch Rickey, the owners were acting in a rational, profit-maximizing manner when they segregated baseball.
3. Teams not only had lower productivity than if they would have hired more African-American players but also lost revenue from fans that would have been interested in seeing the new players.
4. Discrimination meant teams had to be willing to sacrifice revenue and face higher labor costs in order to act on employer and employee-based discriminatory desires.
5. C and D only