A child has recently received a concussion from playing football. The parents want the child to immediately return to practice. Which of the following statements are true?
a) As long as the balance is not still affected, it is safe to return to practice.
b) Return to practice is dependent on if the patient experienced amnesia.
c) All patients must stay out of practice for three days before returning.
d) Returning too soon can lead to repeat injury and progressive damage.