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
A distinct advantage that tetracyclines have over penicillins is that tetracyclines: 
Select and explain. 
A. Have no side effects, B. Do not cause superinfections, C. Are safer to use during pregnancy, D. Have a wider range of antibacterial activity
D: Have a wider range of antibacterial activity
Answer: D: Have a wider range of antibacterial activity 
Explanation: None