The nurse is checking for capillary refill on a child in Bryant's traction. How long does it take for the toe nailbed to regain color if adequate perfusion is assessed?

A. Normal capillary refill time is generally less than 3 seconds, indicating adequate peripheral perfusion. B. Four seconds is prolonged and may suggest compromised circulation. C. Six seconds is significantly delayed and indicates poor perfusion requiring immediate attention. D. Five seconds is also prolonged and suggests impaired circulation.