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: Biochemistry
A 30 year old female patient complains of cough with sputum. Patient is a known case of tuberculosis and is on rifampin for the same. All of the following are true about this drug EXCEPT- 
Select and explain. 
A. It inhibits transcription, B. It binds with the beta-subunit of prokaryotic RNA polymerase, C. It inhibits RNA polymerase activity, D. It binds with the alpha-subunit of prokaryotic RNA polymerase
D: It binds with the alpha-subunit of prokaryotic RNA polymerase
Answer: D: It binds with the alpha-subunit of prokaryotic RNA polymerase 
Explanation: Rifampin : lt is an antibiotic widely used for the treatment of  tuberculosis and leprosy. Rifampin binds with the beta-subunit of prokaryotic RNA polymerase and inhibits its activity. It inhibits transcription.
Satyanarayana- Biochemistry, 3rd edition, pg-549