Questions Refer to the Map and Image Below

Questions refer to the map and image below.
Commercial Hubs in Mesoamerica and North America c. 1000 Monks Mound, Cahokia Mounds State Historic Site
-Given the information on the map, what is a likely explanation for the shape of the mound at Cahokia?

A) The knowledge of pyramid-shaped ceremonial sites spread from the Mayan and Toltec cities to the Mississippi Valley civilizations.
B) The knowledge of pyramid-shaped ceremonial sites spread along the land trade routes to the Mayan and Toltec cities.
C) Pueblo people could not create ceremonial sites because they lacked large draft animals or rivers to transport construction material.
D) Mesoamerica and North America did not create ceremonial sites like those in Afro-Eurasia.