A carpenter’s sketch of a room does not include a scale. She measures a wall that has been built and finds that it is 51.2 feet long. On the blueprint, this wall is 8 inches long. What is the scale for this blueprint?
A.
1 in. : 6.4 ft.
B.
1 in. : 64 ft.
C.
1 in. : 408 ft.
D.
1 in. : 409.6 ft.