Which statement best describes the origins of sharecropping?

Which statement best describes the origins of sharecropping?
 
  a. The federal government was unwilling to help the freed people in any way, so they had no alternative but to go into sharecropping.
  b. Most former slaves preferred wage labor, but terrorist groups like the Ku Klux Klan forced them to accept sharecropping.
  c. The freed people recognized that under sharecropping they could earn more money than through wage labor, if they worked harder.
  d. The South was short of capital, and landowners found it easier to pay workers in kind, rather than in cash.