Chiyoko wants to fence off a section of her backyard to be an exercise space for her dogs, as shown in the diagram. Chiyoko must find the perimeter to figure out how much fencing she needs. How can Chiyoko express the perimeter in the most simplified way? A polygon with 5 sides. The polygon is shaped like a rectangle with a triangle on top. The bottom horizontal side is labeled 2 x. The two vertical sides on the left and right are each labeled zero point 5 x. The two slanted sides that meet at the vertex at the top of the figure are each labeled x plus 4.
A
4(x + 4)

B
x(x + 4)

C
5x + 4

D
5x + 8