If a building b feet high casts a shadow f feet long, then, at the same time of day, a tree t feet high will cast a shadow how many feet long?
(A) f t/b
(B) f b/t
(C) b/ (f t)
(D) t b/f
(E) t/ (f b)


[spoiler]Source: https://www.west.net/~stewart/gmat[/spoiler]