ANSWER

EXPLANATION
We determine the slope of each line using the slope formula;

The slope of BC is


The slope of AB is


The two lines are perpendicular so the product of their slopes is -1.

This implies that,




.
Answer: D
Step-by-step explanation:
D
<span> a </span>line segment<span> is a part of a </span>line<span> that is bounded by two distinct end points</span>
I forgot how to do it :( I can ask my brother..
I believe the answer is B! good luck.