The nurse is reviewing a patient's medical record and notes that he is in a coma. Using the Glasgow Coma Scale, which number indicates that the patient is in a coma?

A. A score of 24 would indicate a fully alert and responsive patient. The Glasgow Coma Scale ranges from 3 (deep coma) to 15 (fully awake). B. A score of 12 indicates a moderate level of consciousness, not a coma. C. A score of 15 indicates that the patient is fully conscious and alert. D. A score of 6 indicates a coma and represents a very low level of consciousness, with minimal responses to stimuli.