Children with muscular dystrophy can only rise when doing what sign?

Rationale: A. Koplik sign refers to small white spots on the buccal mucosa, indicative of measles—not muscular dystrophy. B. Gowers' sign is a classic indicator of muscular dystrophy, especially Duchenne muscular dystrophy. It describes the maneuver where a child uses their hands and arms to "walk" up their thighs to stand up due to proximal muscle weakness. C. Kernig's sign is used to detect meningeal irritation in meningitis, not related to muscle weakness. D. McBurney's sign refers to point tenderness in appendicitis, unrelated to muscular dystrophy.