This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: mycology, Subject name: Microbiology
Which of the following antibiotic is added to sabouraud's dextrose agar to inhibit the growth of contaminated bacteria? 
Select and explain. 
A. Gentamicin, B. Chloramphenicol, C. Penicillin, D. Doxycycline
B: Chloramphenicol
Answer: B: Chloramphenicol 
Explanation: Chloramphenicol is added to inhibit bacteria being a broad spectrum antibiotic Cycloheximide is added to inhibit fungal growth Ref: Baveja 5th ed pg: 546