What was the main result of the encomienda system?

A. The Aztec empire was defeated.
B. Christianity spread throughout North America.
C. Native people were forced to work for Spanish colonists.
D. All land in Mexico was taken over by the Spanish crown.

I believe it is C. Native people were forced to work for Spanish colonists.

Not that all the other answers are false but the Spanish colonists forcing the indigenous people to work for them was the MAIN result.