I'm pretty sure fillet mignon comes from the Loin... B.
The correct answer is B. Loin
Filet mignon is a cut of beef and pork that is famous for being one of the best cuts of meat, characterized by being lean meat or pulp, that is, it has no bone. This is obtained from the lower or lumbar area of the loin of pigs and cattle known as the short loin. This cut of meat is usually, prepare on the grill for a short time which leads to a filet mignon cooked medium-rare that is juicy. It is accompanied with different sauces that enhance its flavor. So, the correct answer is B. Loin
If you look up a cow meat cart it will show you where each piece of meat comes from :)