An Occupational Therapy (OT)practitioner Is Training a Client in How

An occupational therapy (OT) practitioner is training a client in how to lock and unlock the elbow of an above-elbow body-powered prosthesis.The therapist should teach the client to do which of the following?

A) Hyperextend the shoulder and adduct the scapula.
B) Flex the shoulder and abduct the scapula.
C) Hyperextend the shoulder, abduct the shoulder, and depress the scapula.
D) Flex the shoulder, abduct the shoulder, and elevate the scapula.