Which One of the Following Is Considered a Normal Finding

Which one of the following is considered a normal finding when assessing a patient suffering from a head injury?

A) The left pupil dilates when light is shown onto the right pupil.
B) The right pupil constricts when light is shown into it.
C) Both the left and right pupils dilate when light is shown into them.
D) The right pupil dilates and the left pupil constricts when light is shown into the left eye.