What happened when Cortés and his soldiers first arrived in the Aztec capital of Tenochtitlan?

The Spanish army became ill with smallpox.

The Aztec ruler Moctezuma welcomed them as guests at first.

The Aztec army attacked Cortés and his soldiers.

Cortés immediately killed the Aztec leader Moctezuma and burned the city.

The Aztec ruler Moctezuma welcomed them as guests at first.