Child Orthopedic Shoes Which Sentence Is Used INCORRECTLY?

Which sentence is used INCORRECTLY? - child orthopedic shoes

A) orthopedic shoes can help correct the club foot of a child.
B) an orthopedic surgeon in a ski resort has a general practice in the winter.
C-help)! It is an orthopedic green in my sleeping bag.
D can improve), the most advanced orthopedic deformities of the spine.

Which of the following sentence has no meaning, are used incorrectly.