Among toddlers and children up to age five, femur fractures usually result from a low energy fall. In most cases, the orthopedic surgeon realigns the fracture using fluoroscopy or x-ray imaging as a guide and immobilizes the leg in a type of cast called a spica cast. Approximately how many weeks does it take for a fractured femur to heal in a 3-year-old? A. 2 weeks B. 4 weeks C. 8 weeks D. 10 weeks