This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Rifampicin acts by inhibiting : 
Select and explain. 
A. DNA Dependent RNA polymerase, B. RNA dependent DNA polymerase, C. Mycolic acid inhibition, D. Mycolic acid incorporation defects
A: DNA Dependent RNA polymerase
Answer: A: DNA Dependent RNA polymerase 
Explanation: None