The correct option is B All of the above
Poultry fowl are susceptible to viruses, bacteria and fungi. Viral disease of poultry fowl is fowl pox. Fowl cholera is a bacterial disease of poultry fowl. Aspergillosis is a fungal disease found in poultry fowl. Body temperature of poultry fowl is optimum for growth and development of viruses, fungi and bacteria. Therefore, option D is correct.