color

Alice has a rectangular garden which width is $6$ feet and length $7$ feet. She wants to divide her garden into two parts using a fence as in the following figure so that she can keep violet and yellow flowers in two areas. How long should the fence be?

A. 9.46 ft
B. 8.03 ft
C. 9.2 ft
D. 42.5 ft
E. 85 ft