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
Most common cause of common cold is 
Select and explain. 
A. Corona virus, B. Echo virus, C. Rhino virus, D. Arbo  virus
C: Rhino virus
Answer: C: Rhino virus 
Explanation: M/c cause of common cold is Rhino virus.