Answer:
A. as much advertising to fans as possible
Explanation:
The event triangle is made up of these 3 components
1. The participants
2. The sponsors
3. The spectators
Here the fans represent the spectators. They are the most critical factor of the event triangle .
The spectators are those who the boy band would be playing for. They are the ones who would go out to watch the event.
The spectators become monetary when the advertisement gets them to buy tickets for the event. That is they pay a fee to watch the event.
Primarily they provide necessary financial support for the event plus the money made from adverts.