The Placebo Effect Is a Documented Psychological Effect That Makes

The placebo effect is a documented psychological effect that makes patients _________.

A) show signs of improvement, even though there is no actual pharmacological effect
B) show signs of degradation, even though there is no actual pharmacological effect
C) believe that they are experiencing an increase in blood pressure
D) believe that they have no improvement despite an increase in dosage
E) None of the above