The correct option is A Both the statements A and B are correct
Ranikhet disease is also known in the West as Newcastle disease. Newcastle disease is a highly contagious viral disease s an infection of domestic poultry and other bird species with virulent Newcastle disease virus (NDV). It is characterised by digestive, respiratory and/or nervous signs. NDV synonymous with avian paramyxovirus serotype 1 (PMV-1), is an RNA virus.