Which of the statistics used in "A Bang to the Brain" lent the most credibility to how dangerous a concussion can be? A. "Studies have found that the risk for a second injury is greatest in the 10 days following an initial concussion."
B. "For about 9 in 10 people with concussions, symptoms disappear within 7 to 10 days."
C. "But a subgroup of kids, about 10% or 20%, showed a dramatic onset of symptoms after their injury and persistent symptoms that in some cases remained even 12 months after the injury."
D."Loss of consciousness occurs in about 1 in 10 concussions."