Use Similar Triangles and a Proportion to Find the Distance $a = 115$

Multiple Choice

Use similar triangles and a proportion to find the distance across the swamp shown in the figure where distance $a = 115$ ft, distance $b = 220$ ft, and distance $d = 75$ ft. Round your answer to the nearest foot.

A) $218$ ft.
B) $143$ ft.
C) $514$ ft.
D) $39$ ft.
E) $337$ ft.