Choose the correct passive voice of the sentence - "The event organizers had arranged a surprise performance by a popular band at the last moment.”
1
A surprise performance by a popular band at the last moment had been arranged by the event organizers.
2
A surprise performance by a popular band at the last moment was arranged by the event organizers.
3
A surprise performance by a popular band at the last moment is being arranged by the event organizers
4
A surprise performance by a popular band was being arranged by the event organizers at the last moment.