How did the Aztecs determine who would farm certain lands?

The Aztecs gave specific families the rights to farm specific areas, but the land belonged to the entire community.
Families could purchase lands of their own in order to have enough areas to plant food for themselves.
The Aztecs gave certain families land that they would keep in their family as their own private property.
Horticulturalists decided which farmers could have the right to farm particular areas based on their skills.

The correct answer is: The Aztecs gave specific families the rights to farm specific areas, but the land belonged to the entire community.