A map is drawn on a coordinate plane. The school is located at (-1,4), the city is located at (4,4), and the mall is located at (-1,-2). The three locations form a right triangle. If 1 unit on the coordinate plane represents 2 miles, what is the distance from the school to the mall?
a.) 8 miles / b.) 10 miles / c.) 12 miles / d.) 16 miles