Quality control is set up to determine the validity of cetrimide agar. Which two organisms should be used?
a. B. bronchiseptica and Cupriavidus pau-culus
b. A. denitrificans and Alcaligenes faecalis
c. Achromobacter piechaudii and B. bron-chiseptica
d. Centers for Disease Control and Preven-tion (CDC) Alcaligenes-like group 1 and C. pauculus
C
Only A. piechaudii and B. bronchiseptica, both positive and negative for growth on cetrimide agar, respectively, should be used for quality control purposes.
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