Which two claims are supported by the information in the passage? A. Concussions are the deadliest injury on Earth.
B. Students should avoid athletic events, as they could lead to concussions.
C. Diseases like dementia, Alzheimer's, and Parkinson's occur only after a head injury.
D. Following an injury, athletes should rest until their symptoms return to normal levels.
E. Concussions are largely prevalent in high school athletes.