A 16-year-old adolescent presents after a sports-related concussion. He has headache and difficulty concentrating but no red flags. According to Canadian concussion guidance, what is the recommended approach to return to school and sport?AComplete physical and cognitive rest until all symptoms resolve, then immediate full return to playBGradual, stepwise return to school and physical activity with close monitoring and no same-day return to sportCImmediate return to full-contact sport if CT head is normalDNo school attendance for at least 1 monthEPrescribe prolonged bed rest and no activityCheck my answer