A run-on sentence. "A triangle is a polygon. It has three sides."
B, because it’s from that answer it tells you what the story is about summarized
The miners who go 1,000 feet into the earth or climb 2,000 feet upon the cliffs and bring forth from their hiding places the precious metals to be poured in the channels of trade are as much businessmen as the few financial magnates who in a backroom corner the money of the world.
Is your answer. Hope this helps!