A nurse is caring for a child with an inner ear infection. The child's mother is worried because ...

A nurse is caring for a child with an inner ear infection. The child's mother is worried because the child is having recurrent ear infections and wants to know how the function of the inner ear might be affected.
 
  What is the best description the nurse can give the mother about the function of the inner ear?
  1 . Responsible for protecting internal structures of the ear from foreign substances
  2 . Responsible for the transmission of sound
  3 . Responsible for transmitting sound waves
  4 . Responsible for providing information about body position to the brain
  A) 1, 2
  B) 1, 3
  C) 2, 3
  D) 3, 4