Historians Generally Do Not Use the Term Feudalism Today in Part

Historians generally do not use the term feudalism today in part because it:

A) is too narrow a term to capture political and economic relationships in the Middle Ages.
B) was a term often used in the Middle Ages that means little today.
C) is a Marxist term that is inappropriate for use about the Middle Ages.
D) is not a real word.
E) means too many different things to be of use.