In the 1950s, James Vicary Reported That He Had Been

In the 1950s, James Vicary reported that he had been able to manipulate sales for popcorn and Coca-Cola by flashing subliminal messages during the showing of a movie in a public theatre. What is the current scientific consensus on the effectiveness of subliminal persuasion?

A) When certain criteria are met, subliminal persuasion can occur.
B) Vicary's study was sound and subliminal persuasion is powerfully effective.
C) Vicary's study was flawed and subliminal persuasion is a myth.
D) Subliminal persuasion works with aural but not visual stimuli.