A teenage female patient was ejected from a car as it rolled down a hill after she ran off the road. She is responsive, but with signs of early shock and respiratory distress. She has bruising to her anterior abdomen and chest, a laceration to her left temple, and deformity to her left wrist. At which point should the wrist injury be splinted?

A) Prior to full spinal motion restriction precautions being provided
B) Before transferring the patient to the stretcher
C) Just before leaving the scene
D) En route to the hospital

D) En route to the hospital