Evidence About Men's Professional Tennis Players Has Indicated That

Evidence about men's professional tennis players has indicated that:

A) the historical connection between tennis and the elite has insulated it against corrupt practices such as gambling and fixing among players.
B) match fixing is more likely among lower-ranked than top-ranked players.
C) tennis has attracted very little interest among Internet gamblers.
D) professional tennis officials have expressed little or no concern about whether players in their sport have displayed honesty or integrity in their efforts on the tennis court.