A football coach teaches his players like this: "Football matches are always based on results. In football matches, you are either a winner or a loser; in the eyes of the fans, you are either a brave or a weak person. Winners are brave in the eyes of fans, so every loser is weak in the eyes of fans. ". In order for the above football coach's argument to be valid, which of the following must be assumed? ['In the eyes of the fans, the brave on the pitch will win.', 'Fans have accurate judgment to distinguish between bravery and cowardice.', 'The brave in the eyes of fans, not necessarily the true brave.', 'Even on the field, winning or losing is not the only criterion that distinguishes bravery and cowardice.']