This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Amastigote forms are seen in -a) Leishmania donovani b) Toxoplasma gondic) Leishmania majord) Entamoeba 
Select and explain. 
A. a, B. ac, C. ad, D. b
B: ac
Answer: B: ac 
Explanation: Leishmania occurs in two stages
1. Amastigote (Aflagellar stage)

In the R.E. system of vertebrate host (Man, dog and hamster)

2. Promastigote (flagellar stage )
a) In gut of sand fly
b) Artificial culture