HELP PLS Refer to the two maps.

Map 1

Map of American Indian Trade prior to 1492. Trade centers labeled are the Dalles, Mandan Hidatsa, Arikara, Zuni, Pecos, and Corazones. A key notes Primary or major trade centers, Significant permanent secondary trade centers, Significant impermanent secondary trade centers, Other permanent secondary centers, Tertiary centers, Crossroads and local intertribal trade hubs, and Trade routes. Trade centers are marked with large and small circles. Routes are marked with lines.

Map 2

Map of Major Trading Routes of the Mongols in 1260. A key notes the shaded area as the Mongol Empire, Major trade routes are lines, and the Great Wall of China is marked with a dotted line. Cities are labeled and marked with dots. Major trade routes extend from China and Russia to India, Africa, the Middle East, Italy, France, Spain, and Denmark.

Which of the following best explains the effects of Mongol trade policies?

Mongols controlled overland trade, leading Europeans to search for alternate trade routes.

Mongols avoided contact with most major religious groups in Asia to prevent assimilation.

Mongols successfully spread their culture and religious beliefs along overland trade routes.

Mongols heavily taxed seafaring traders, thus encouraging overland trade to flourish.

I think it's A but i'm not sure