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: Social & Preventive Medicine
Amphixenosis is 
Select and explain. 
A. T. cruzi, B. Entrobius - vermicularis, C. Anthrax, D. Ascaris lumbricoidis
A: T. cruzi
Answer: A: T. cruzi 
Explanation: None