Peter is a farmer and wants to buy a field which is in the shape of a trapezium. Its side along the river is parallel to the river bank and twice the side along the road. If the area of the field is and the perpendicular distance between the two parallel sides is 100 m, the of side along the river is:

• A. 74 m
• B. 168 m
• C. 148 m
• D. 84 m