The students in a certain class are all football fans. During the 2014 World Cup, all the students who supported the Argentine team did not support the German team, and all the students who supported the Argentine team did not support the Brazilian team. Some students who support the American team support the German team, and some students who support the American team support the Brazilian team.
Some students who support the German team must support neither the Brazilian team nor the American team if the above statement is true.