The Experiment Performed by Psychologists Singer and Benassi Involving a Conjurer

The experiment performed by psychologists Singer and Benassi involving a conjurer who performed before a group of students tends to show that:

A) A conjurer's tricks can be exposed by keen observers.
B) People see what they have been conditioned to see.
C) Psychokinesis is possible given the right conditions.
D) Many people are disposed to magical ways of thinking.
E) Clairvoyance is not a reliable way of solving crimes.