Answer
The answer is the FA Cup. In the 2019-20 season, Arsenal, under manager Mikel Arteta, reached the final of the FA Cup, where they faced Chelsea at Wembley Stadium. The match ended in a 2-1 victory for Arsenal, with goals from Pierre-Emerick Aubameyang and Nicolas Pépé. This marked Arsenal's 14th FA Cup triumph, tying them with Manchester United as the most successful club in the competition's history.