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
Cyst form is found in 
Select and explain. 
A. Dientamoeba fragilis, B. B. Coli, C. T. vaginalis, D. T. Intestinalis
B: B. Coli
Answer: B: B. Coli 
Explanation: None