All of the Following Are Accurate Statements Concerning Microbial Control

All of the following are accurate statements concerning microbial control using dry heat except ________.

A) it is the preferred method of control to sterilize cottons,plastics and paper
B) it takes up to 4 hours to sterilize instruments in a hot-air oven,whereas the Bunsen burner will incinerate an inoculating loop almost immediately
C) the Bunsen burner can achieve temperatures up to 1,870ᵒC,whereas the hot-air oven reaches temperatures of up to 180ᵒC
D) while fast and effective,the Bunsen burner is limited to metals and glassware,whereas powders and oils can also be sterilized in the hot-air oven