I wanna be helpful and I'm pretty sure it's A, but I also believe that people were paid to move
Marco polo believed to have journeyed across Asia at the height of the Mongol Empire. Upon reaching China, Marco Polo entered the court of powerful Mongol Ruler Kublai Khan, who dispatched him on trips to help administer the realm. Marco polo remained abroad for 24 years.
Longitude runs up and down so the answer is C. They run in a north and south direction.