How Does Conducting a Double-Blind Study Attempt to Remedy the Experimenter

Multiple Choice

How does conducting a double-blind study attempt to remedy the experimenter bias effect?

A) The experimenter does not know,but the participant does know,what condition the participant is assigned to.
B) The experimenter and the participant both know what condition the participant is assigned to.
C) The experimenter knows,but the participant does not know,what condition the participant is assigned to.
D) Neither the experimenter nor the participant knows what condition the participant is assigned to.