This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Antimetabolites and Quinolones, Subject name: Pharmacology
Which of the following antimicrobial drugs should be avoided in pregnancy? 
Select and explain. 
A. Penicillin G, B. Ciprofloxacin, C. Cephalosporin, D. Erythromycin
B: Ciprofloxacin
Answer: B: Ciprofloxacin 
Explanation: Fluoroquinolones like ciprofloxacin can cause cailage and tendon (achilles tendon) damage in the baby if given during pregnancy. It is more seen in old patients > 60 yrs old or patients taking steroids or those who had organ transplant. Safe antimicrobials in pregnancy are: P: Penicillins C: Cephalosporins M: Macrolides