The Supinator Muscle Originates from The

The supinator muscle originates from the:

A) lateral epicondyle of the humerus and neighboring posterior part of the radius.
B) lateral epicondyle of the humerus and neighboring posterior part of the ulna.
C) medial epicondyle of the humerus and neighboring posterior part of the radius.
D) medial epicondyle of the humerus and neighboring posterior part of the ulna.