The Direct Microscopic Examination of Infected Materials, Along with Specimen

The direct microscopic examination of infected materials, along with specimen site and historical information, may suggest modifications in routine culture techniques to allow the isolation of a suspected pathogen. Common modifications include all of the following, except

A) ordering other culture tests.
B) adding special media.
C) changing incubation temperature or atmosphere.
D) changing the amount of humidity in the incubator.