A 56-year-old woman with no significant past medical history presents to her primary care physician with a cough. She notes that the cough began two weeks ago and has been worsening. Over the past several days, she has developed low-grade fevers, and the cough has become productive of green mucus. Her physician decides to treat her with a "Z-pack," which is a 5-day course of azithromycin, and orders a chest radiograph. Which of the following antibiotics has the same target site as azithromycin?
A. Ciprofloxacin
B. Chloramphenicol
C. Bacitracin
D. Gentamycin
E. Vancomycin