Order the Sequential Steps for the Recirculation of Instruments

Order the sequential steps for the recirculation of instruments.
A) 1
B) 2
C) 3
D) 4
1) Sterilized instruments should be stored in wrapped preset trays or cassettes away from contaminated are a.
2) Nonsterile instruments should be covered and placed in a demarcated area for contaminated instruments.
3) Nonsterile instruments should be cleaned using the ultrasonic cleaning device.
4) Instruments should be placed in the autoclave machine set at the appropriate pressure and time.