Devon and Trey ride their bikes to and from school each day. Trey is not wearing a helmet today, and he crashes and lands hard on his head. Devon encourages him to lie still while he assesses the injuries. What are the most important signs or symptoms Devon should look for to determine the severity of the head injury? Check all that apply.any broken bonesbleeding from nose or earsconfusionunequal pupilsinability to stay alertslurred speech