This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology Pa 1 (Protozoology), Subject name: Microbiology
A 35 year old captain in the army has been plagued by a painful, erosive lesion near his ear lobe since his return from operation dese storm several years ago. Punch biopsy of the leading edge of the erosion reveals macrophages distended with oval amastigotes. How was this infection acquired? 
Select and explain. 
A. Contact with contaminated drinking water, B. Bite of infected anopheles mosquito, C. Bite of infected reduviid bug, D. Bite of sandfly
D: Bite of sandfly
Answer: D: Bite of sandfly 
Explanation: This is the history of cutaneous leishmaniasis caused by the L. tropica or L. major. The vector is sandfly (Phlebotomus sergenti or P.papatasii). This disease is also called as Delhi boil, Baghdad boil and oriental sore. Most cases of cutaneous leishmaniasis are seen in Afghanistan, Brazil, Iran, Iraq, Peru, and Saudi Arabia.