What was the result of the Spanish encounters with the Aztec and Inca civilizations during the 1500s?

A.
The Spanish defeated the Aztecs and Incas.
B.
The Aztecs and Incas defeated the Spanish.
C.
The Spanish protected the lands of the Aztecs and Incas.
D.
The Aztecs and Incas formed an alliance with the Spanish.

A. The Spanish defeated the Aztecs and Incas.