Which of the Following Is Correct with Regard to the Competition

Which of the following is correct with regard to the Competition Act?

A) A company can cut prices in one region of Canada while selling at a higher price everywhere else even if this substantially lessens competition.
B) Businesses are generally satisfied that the Competition Bureau moves fairly quickly in approving or denying merger plans.
C) Pyramid selling is permitted as long as participant know they are involved in a pyramid selling scheme and they know they are not allowed to make windfall profits from the scheme.
D) The mere existence of a conspiracy is assumed to be proof that competition has been reduced.
E) All of these are correct.