Your patient is a 40 years old man with occasional mild right upper abdominal discomfort but is otherwise well. On examination his liver is enlarged.an MRI reveals a cystic mass in the liver . On questioning he says that he was born and raised in rural area argentina on sheep ranch and came to this country 10 years ago of the following which one of the mostly cause ,? A. Diylidium latum B. Echinococcus granulosus C. Taenia saginata D. Taenia solium