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: Social & Preventive Medicine
Abroviral infection(s) include -a) Chikungunya feverb) West nile feverc)  JEd)  Sandfly fevere) Malaria 
Select and explain. 
A. abcd, B. acd, C. bcd, D. abd
A: abcd
Answer: A: abcd 
Explanation: None