A 31-year-old woman comes to the physician for a follow-up appointment. She was recently started on a medication for her condition diagnosed via light microscopy two weeks ago as shown.

The pharmacologic therapy prescribed to this patient can also be used to treat which of the following?
A) Acanthamoeba
B) Atypical pneumonia
C) Ehrlichia chaffeensis
D) Endocarditis
E) Giardia lamblia

