This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: Microbiology
A 35 year old man presented with dry cough and rusty colored sputum. He has a history of eating in a Chinese restaurant very often with consumption of crabs. What is the probable causative agent in this condition? 
Select and explain. 
A. Diphyllobothrium latum, B. Pneumocystis jirovecii, C. Paragonimus westermani, D. Strongyloides stercoralis
C: Paragonimus westermani
Answer: C: Paragonimus westermani 
Explanation: Option A: D/T B12 deficiency. Fish tapeworm Option B: Causes Intestinal Pneumonia