Contraction of the __________muscles will protrude the tongue out of the mouth, whereas contraction of the ______muscles will retract the protruded tongue back into the mouth.
a) Genioglossus, Styloglossus
b) Styloglossus, Geniohyoid
c) Mylohyoid, Genioglossus
d) Hyoglossus, Genioglossus