Two horse drawn wagons start from the same farm. Wagon X travels South for 4.5 km and then turns right and travels for 7.5 km. In the meanwhile, wagon Y travels 9 km North, then 3.5 km West, then 2 km North, then it turns left and travels 4 km. Where is wagon Y with respect to wagon X?

• A. 6.5 km North
• B. 15.5 km North
• C. 15.5 km South
• D. 6.5 km South