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.4(x + 4)
B. x(x + 4)
C. 5x + 4
D . 5x + 8