Marco Leyton,a Psychology Professor at McGill University,began to Study the Effects

Multiple Choice

Marco Leyton,a psychology professor at McGill University,began to study the effects of cocaine on the human brain.To be considered a potential participant in his research,agreement of all of the following was expected EXCEPT:

A) you are fully informed about the study and give consent.
B) you cannot be a previous user of cocaine.
C) you are a previous user of cocaine.
D) you are required to stay overnight so the doctors and nurses can continue to monitor you.