Given this diagram Suzi computed the perimeter of her dog's new pen to be 3x + 5 units. What
is wrong with her reasoning?
2x + 5

A. She should have multiplied 3x + 5 by 4 to get a perimeter of 12x + 20 units.

B. She should have multiplied x and 2x + 5 to get a perimeter of 2x2 + 5x units.

C. She should have multiplied both the length and width by 2 and added to get a
perimeter of 6x + 10 units.

D. She should have multiplied 2x + 5 by 4 to get a perimeter of 8x + 20 units.
O