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
Infective form of entamoeba histolytica 
Select and explain. 
A. Uninucleate cyst, B. Binucleate cyst, C. Quadrinucleate cyst, D. All of the above
C: Quadrinucleate cyst
Answer: C: Quadrinucleate cyst 
Explanation: Quadrinucleate cyst is the infective form.