Which description best explains the effect of thorax counter-rotation to the left on scapular motion in the pattern discussed?

• A. Right scapula internally rotates and moves away from the spine; left scapula externally rotates and moves toward the spine.
• B. Right scapula externally rotates and moves toward the spine; left scapula internally rotates and moves away from the spine.
• C. Right scapula internally rotates and moves toward the spine; left scapula externally rotates and moves away from the spine.
• D. Right scapula externally rotates and moves away from the spine; left scapula internally rotates and moves toward the spine.

Answer: (B)