The ramp shown below is used to move crates of fruit to loading docks of different heights. When the horizontal distance AB is 12 meters, the height of the loading dock, BC, is 4 meters. What is the height of the loading dock DE?

Question

The ramp shown below is used to move crates of fruit to loading docks of different heights. When the horizontal distance AB is 12 meters, the height of the loading dock, BC, is 4 meters. What is the height of the loading dock DE? 
A. 12m 
B. 8m 
C. 9m 
D. 15m
My best answer is C @Ms.Sue can you please check

Damon · Answer

You have to give us some dimension, like how far away

Tisky · Answer

C, 9 meters.

Hennessy · Answer

I honestly don't know the answer I need to know how to do this step by step so I won't ask for help anymore