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
Mechanism of action of tetracycline is - 
Select and explain. 
A. Binds to A site and inhibit attachment of t-RNA., B. Inhibits peptidyl transferase, C. Causes misreading of mRNA, D. Causes termination of peptide chain elongation
A: Binds to A site and inhibit attachment of t-RNA.
Answer: A: Binds to A site and inhibit attachment of t-RNA. 
Explanation: Ans. is 'a' i.e., Bind to A site and inhibit attachment of t-RNA