Canada Post Has a Monopoly on Residential Mail Delivery

Multiple Choice

Canada Post has a monopoly on residential mail delivery. Pfizer Inc. makes LIPITOR, a prescription drug that lowers cholesterol. Rogers Communications is the sole provider of cable television service in some parts of Ontario. The monopolies which are legal monopolies are

A) only Pfizer.
B) Canada Post, Pfizer, and Rogers Communications.
C) Canada Post and Pfizer.
D) only Canada Post.
E) only Rogers Communications.