You are transporting a patient who was struck in the side of the head with a baseball bat while playing with his friends. Your patient is alert and denies any problems, only soreness to the left side of his head where there is a small hematoma forming. The patient requests transport to the local ED, which is a level 3 trauma center down the street. The patient is alert and on O2 via NRBM at 15 lpm. Your patient's speech begins to slur and he becomes unconscious. The MOST appropriate action the EMT can do now is:A.stop the ambulance and call for aeromedical evacuation.B.continue treatment and have your partner notify the receiving facility of the change.C.obtain a BGL measurement and continue transport.D.assure a patent airway and divert to a level 1 trauma center.