The mastoid process is located approximately: A. 1″posterior to the external opening of the ear. B. ½″anterior to the external opening of the ear. C. 1″inferior to the external opening of the ear. D....

The mastoid process is located approximately: A. 1″posterior to the external opening of the ear. B. ½″anterior to the external opening of the ear. C. 1″inferior to the external opening of the ear. D. 1″posterior to the angle of the mandible.