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
Group B (flaviviruses) Arboviruses is/are-a) Dengue feverb) Rift valley feverc) Chikungunya feverd) J.E.e) Yellow fever 
Select and explain. 
A. acd, B. bde, C. ade, D. ad
C: ade
Answer: C: ade 
Explanation: None