During the School-Age Years, a Malocclusion Can Occur

During the school-age years, a malocclusion can occur. Which of the following statements best describes a malocclusion?

A) The upper and lower teeth come together in a way that the permanent upper and lower teeth do not approximate.
B) A permanent tooth cannot come through the gum due to a baby tooth still being in place.
C) The teeth and jaws are aligned in such a manner as to prevent the lips from coming together.
D) The tag of skin under the tongue is so tight that until it is cut the tongue cannot work properly in concert with the teeth.