A paved pedestrian path is 5 metres wide. A yellow line is painted down the middle. If the edges of the path measure 40\:m,10\:m,20\:m, and 30\:m, as shown, what is the length of the yellow line?
Answer Choices
A. 100\:m
B. 97.5\:m
C. 95\:m
D. 92.5\:m
E. 90\:m