The correct option is B Ascaris
Ascaris, an intestinal parasite causes disease ascariasis in animals. Symptoms of this disease include internal bleeding, muscular pain, fever, anaemia and blockage of the intestinal passage. When an infected person excretes the faecal matter from the body, the eggs of the parasite are excreted along with the faeces of infected persons, which contaminate soil, water, plants, etc.
Wuchereria, the filarial worm, cause a slowly developing chronic inflammation of the organs in which they live for many years, usually the lymphatic vessels of the lower limbs and the disease is called filariasis.
Epidermophyton and Microsporum are responsible for ringworms which is one of the most common infectious diseases in man.