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 1,870^oC, whereas the hot-air oven reaches temperatures of up to 180^oC
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