A person opens their eyes to pain, exhibits abnormal extension when painful stimuli are applied, and does not speak. What is the person's Glasgow Coma Scale score? GLASGOW COMA SCALE BEST EYE-OPENING RESPONSE 4 Spontaneously 3- To speech 2- To pain 1 No response (Record "C" if eyes closed by swelling) BEST MOTOR RESPONSE to painful stimuli 6 Obeys verbal command 5 Localizes pain 4 Flexion-withdrawal 3 Flexion-abnormal 2 Extension-abnormal 1 No response (Record best upper limb response).