This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
DOC for Chlamydia trachomatis in pregnancy 
Select and explain. 
A. Amoxicillin, B. Metronidazole, C. Cephazolin, D. Clindamycin
A: Amoxicillin
Answer: A: Amoxicillin 
Explanation: Chlamydial infections during pregnancyThe first line of treatment is erythromycin base 500mg orally, four times a day for 7 days, or amoxicillin 500mg orally three times a day for 7days. Azithromycin is an alternative; it is safe in pregnancy.(Refer: Mudaliar and Menon&;s Clinical Obstetrics, 11th edition, pg no: 253)