The Dark Web Refers To

The dark Web refers to:

A) peer-to-peer file sharing networks that are used to illegally share copyrighted material.
B) seemingly innocent Web sites, containing malware that infects computers.
C) sites that cannot be indexed by Google and other search engines.
D) networks that allow only mutually trusted peers to participate in file-sharing activities.
E) Web sites that advocate violence toward people of a specific race, ethnicity, or religion.