Which of the Following Best Describes Three-Field Crop Rotation

Which of the following best describes three-field crop rotation?

A) a system in which European peasants were allotted only three fields on which to farm
B) a system in which European peasants simultaneously planted their crops on three fields to increase food output
C) a system in which European peasants rotated across three fields to increase crop varieties and allow soil to recover
D) a system in which European churches set aside three fields on which peasants could farm freely and thereby supplement their incomes