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: Ophthalmology
Which of the following statement is true regarding Acanthamoeba keratitis: September 2012 
Select and explain. 
A. For the isolation of the causative agent, corneal scraping should be cultured on a nutrient agar plate, B. The causative agent, Acanthamoeba is a helminth whose normal habitat is soil, C. Keratitis due to Acanthamoeba is NOT seen in the immunocompromised patient, D. Acanthamoeba does NOT depend upon a human host for the completion of its life-cycle
D: Acanthamoeba does NOT depend upon a human host for the completion of its life-cycle
Answer: D: Acanthamoeba does NOT depend upon a human host for the completion of its life-cycle 
Explanation: Ans. D i.e. Acanthamoeba does NOT depend upon a human host for the completion of its life-cycle