How Does the Original Progressive Muscle Relaxation Technique Devised by Edmund

How does the original progressive muscle relaxation technique devised by Edmund Jacobson in 1938 differ from the way the procedure is usually taught in clinics today?

A) The procedure is now used in conjunction with muscle relaxant drugs.
B) The person is now taught to monitor his or her stressful thoughts before, during, and after the relaxation procedure.
C) The focus is now on exercising and thus stimulating the muscles, instead of simply relaxing them.
D) The procedure is usually taught in a much shorter period now and is rarely the sole treatment.