This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Prions are - 
Select and explain. 
A. Made up of bacterial and viral paicles, B. Immunogenic, C. Infectious, D. RNA paicles
C: Infectious
Answer: C: Infectious 
Explanation: prions are infectios agents REF:ANATHANARAYANAN MICROBIOLOGY NINTH EDITION PAGE.557