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
Tetracyclines act by 
Select and explain. 
A. Inhibiting the binding of aminoacyl tRNA to the ribosomal complex, B. Inhibiting peptidyl transferase, C. Inactivating elongation factors, D. Causing misreading of mRNA
A: Inhibiting the binding of aminoacyl tRNA to the ribosomal complex
Answer: A: Inhibiting the binding of aminoacyl tRNA to the ribosomal complex 
Explanation: None