What was the significance of a 52 year cycle in both the Aztec and the Mayan calendars?

AThat was the average lifespan of a Mayan or Aztec individual.

BThe ritual and agricultural cycles finished together every 52 years.

CMesoamericans used a base-13 instead of base-10 number system.

DA Mesoamerican myth said that the sun was reborn every 52 years.