A farmer wants to build a fence around a rectangular field of 180 000 m and divide it into thirds with fence parallel to one of the sides of the rectangle. What should be the dimensions of each rectangular pen be if the farmer wants to use the least amount of fencing possible? y Select one: O a. x = 100 2 m y = 300/2 m O b. x = 200 m y = 300 m O c. x = 2003 m y = 300 3 m O d. x = 2002 m y = 150/2 m