EDS-76 is

Answer: Option C

EDS-76 is Adenovirus.
Egg drop syndrome (EDS)-76 is a viral disease that affects birds, notably chickens, ducks, geese and swans. It is characterized by a sudden drop in production of eggs as well as eggshell quality in apparent healthy laying birds.
It is caused by double stranded-DNA virus, called Duck Atadenovirus A. The diameter of the virus is between 70 and 80 nm by negative staining. The natural hosts of Duck atadenovirus A are wild and/or domestic waterfowl such as ducks and geese.