<prompt> When Class III elastics are used, the maxillary first molars will:Move distally and intrudeMove mesially and extrudeMove mesially and intrudeMove only mesially; there will be no movement in the vertical direction  <response>: Class III elastics are worn from the maxillary first molars to the mandibular canines. The force system created by Class III elastics will produce mesial movement and extrusion of the maxillary first molars. 