A workman accidentally lacerated his wrist major in the ulnar side, as long as the half of the transverse wrist. On exploration of the wound, a vessel and nerve are found to have been severed, but no muscle tendons were damaged. Which of the following thu

A workman accidentally lacerated his wrist major in the ulnar side, as long as the half of the transverse wrist. On exploration of the wound, a vessel and nerve are found to have been severed, but no muscle tendons were damaged. Which of the following thumb movements would be abolished？
A.Abduction
B.Adduction
C.Extension
D.Opposition
E.Flexion
正确答案：Adduction