Which of the following BEST describes the practice of sharecropping?
A. Land is bought by a group of families pooling their money and farming together.
B. Land is given to a farmer who in return promises to give some of the crops to other families.
C. Land is rented to a farmer who pledges a certain percentage of the crops to the landowner.
D. Land is sold to a farmer who will own the land after farming it for a certain number of years.