In the United States, Professional Football Players Earn Much Higher

In the United States, professional football players earn much higher incomes than professional soccer players. This occurs because

A) most football players are good soccer players, while the reverse is not true.
B) U.S. consumers overall have a greater demand for football games than for soccer games.
C) football and soccer games are highly substitutable products for most consumers.
D) the marginal productivity of soccer players exceeds that of football players.