This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Medicine
Which of the morphological form of Leishmanla donovani is seen in man ? 
Select and explain. 
A. Promastigote, B. Trypomastigote, C. Amastigote, D. Epimastigote
C: Amastigote
Answer: C: Amastigote 
Explanation: Flagellar promastigotes are introduced by the feeding female sandfly.The promastigotes are taken by neutrophils which undergo apoptosis & are then engulfed by macrophages in which the parasites transform into amastigote. Reference Harrison20th edition pg 1134