A 68-year-old female patient complains of a headache and generalized weakness. Her husband informs you that she was with a friend yesterday and was involved in a motor vehicle collision. She did strike her face on the dashboard, but refused treatment on scene. Her past medical history includes a stroke with right arm weakness and high blood pressure, for which she takes medications. When assessing this patient, which finding should concern the EMT most?

A) Contusion to her left cheek area
B) Weakness to the right-hand grip
C) Bruising behind her left ear
D) Complaint of pain when she moves her jaw

C) Bruising behind her left ear