During the Eagles' pre-season, the coach created a policy to open infielder tryouts to all current players on other teams within the Valley League and to give no infield position to a player from outside the League if a Valley League player tries out who is qualified for the position. Coach's procedure has been adhered to, yet even though several Valley League players have been qualified for any particular infield position, some infield positions have been filled with players from other leagues.
If the information provided is true, which of the following statements must also be true about the Eagles' tryouts?
答案：B