All of the Following Are Correct Regarding the Development of Fief-Holding

Multiple Choice

All of the following are correct regarding the development of fief-holding except it

A) was a response by local leaders who gathered military retainers to protect themselves, as the remnants of the imperial government could not adequately defend the state.
B) led to the creation of a large number of knights who literally owed their livings to the lord who granted them a fief.
C) led to a five-hundred-year period when warfare was dominated by heavily armed cavalry.
D) reflected the high value of land during the centuries during which it was established.
E) was a result of the Church's attempt to give serfs and peasants more social mobility.