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
The reservoir of protozoan infection caused by toxoplasma gondii in children is usually 
Select and explain. 
A. Cats, B. Sheeps, C. Dogs, D. Rats
A: Cats
Answer: A: Cats 
Explanation: None