To Be Sterilized in an Autoclave, Media or Instruments Should

To be sterilized in an autoclave, media or instruments should be

A) packed tightly to avoid dangerous pressure pockets.
B) processed for 15 to 20 minutes at 121° centigrade and 15 psi pressure.
C) processed for 30 to 60 minutes at 132° centigrade and 15 psi pressure.
D) processed for at least 1 hour at 121° centigrade and 15 psi pressure.