The Best Solution to Avoid the Ethical Issue Resulting from the Control

The best solution to avoid the ethical issue resulting from the control group being deprived of the perceived benefits of an experimental treatment is to

A) not inform the control group of the expected benefits of the treatment.
B) randomly assign individuals to the control and experimental groups.
C) schedule the control group for the same treatment after data collection has been completed.
D) provide monetary compensation only to control group members.