Why Was the Crystal Palace in London's World Exhibition Significant

Why was the Crystal Palace in London's World Exhibition significant?

A) Its emphasis on abundance was meant to demonstrate the technological and industrial progress of the Western world.
B) It showed that in the past few decades, France had surpassed Great Britain in power and industrial growth.
C) It was where the British royal family would live and rule for several decades to come.
D) It represented the turn toward minimalism and simplicity that had occurred across Europe following the industrial revolution.
E) It denied entry to visitors, especially those of the middle-class, thereby elevating the aristocracy.