When using a prevacuum cycle to sterilize a set of wrapped instruments, which of the following indicates the proper cycle?
1) 3 minutes at 121.1 °C (250 °F)
2) 4 minutes at 132.2 °C (270 °F)
3) 10 minutes at 121.1 °C (250 °F)
4) 10 minutes at 132.2 °C (270 °F)