How did geography influence the outcome of the Spanish conquest of the Aztec empire?

Question

A.
The difficult terrain made it challenging for the Spanish to navigate and conquer the area.

B.
The presence of natural resources in the Aztec empire enticed the Spanish to invade.

C.
The geographical features of the Aztec empire enabled the Aztecs to successfully defend against the Spanish.

D.
The proximity to other European powers influenced the support and opposition the Spanish encountered during the conquest.