The Common Carriage Principle Is Relevant to Internet Service Providers

The common carriage principle is relevant to Internet service providers (ISPs) because it

A) means the exact same thing as network neutrality.
B) allows ISP's to police the Internet by monitoring the content transmitted through their Internet infrastructure.
C) allows ISPs to privilege the content that they think customers most want to see.
D) prevents ISPs from denying competitors access to their Internet infrastructure.
E) none of the above