PLEASE HELP ASAP!! FOOR BRAINLIEST

Feudal Japanese and European societies were built on a system of hereditary classes. The nobles were at the top, followed by warriors, with tenant farmers or serfs below. There was very little social mobility; the children of peasants became peasants, while the children of lords became lords and ladies

  europe        Feudalism was a political system in which nobles were granted the use of land that legally belonged to the king. In return, the nobles agreed to give their loyalty and military services to the king. Feudalism developed not only in Europe but also in countries like Japan.

c or d both can be the answer