Ethical Standards for Randomized, Controlled Clinical Trials Include

Ethical standards for randomized, controlled clinical trials include

A) not asking subjects to agree to participate without first informing them of the nature of the study and possible risks and benefits.
B) insuring that each subject knows which treatment he or she received.
C) allowing subjects to decide whether or not to be in the control group.
D) never testing drugs which have not been proven to be completely safe.
E) All of the above