Which extra point activates qi and blood and benefits the shoulder joint?
A. this point is located on the tip of the olecranon process of the ulna
B. this point is located 0.5 to 1.0 cun lateral to the depression below the spinous process of C7
C. this point is located 1.5 cun lateral to the lower border of the spinous process of T8
D. this point is located on the anterior aspect of the shoulder joint, between the anterior axillary crease and the depression that lies anterior and inferior to the acromion, at the origin of the deltoid muscle