The Nurse Is Preparing to Assess Phalen's Sign

The nurse is preparing to assess Phalen's sign. Which of the following would the nurse identify as indicative of a positive indicator for this sign?

A) Percussion of the median nerve causes tingling and numbness.
B) Wrist flexion for 30 seconds causes pain and numbness.
C) Electrical stimulation shows a delay in motor responses.
D) Shaking hands causes a reduction in the pain.