One particular feature of the feudal system of England was that all landowners took oath of allegiance for the land they held___________.

One particular feature of the feudal system of England was that all landowners took oath of allegiance for the land they held___________.

A.to their immediate lord，but not to the king

B.to the king, but not to their immediate lord

C.neither to their immediate lord nor to the king

D.not only to their immediate lord, but also to the king

正确答案是D