How many referees are present in each match of the UEFA Europe League?

3
4
5
6

Info: According to the rules, a total of six officials must be present at matches: a main referee, two assistants, a fourth referee on the sideline and two additional assistants.

About this trivia

The UEFA Europe League is a football tournament in which football clubs with the best results throughout the year compete with each other. The tournament every time attracts millions of spectators around the world who are ready to watch their favorite teams who are fighting for a huge monetary reward and the prestigious status of the winner of the UEFA Europe League. In this trivia, you can find out how well you know such a grand tournament.