A client comes to the emergency department with chest pain. The nurse suspects a myocardial infarction. Which questions should the nurse ask the client about the pain in the initial assessment? (Select all that apply)

A. Duration of pain helps assess the severity and timing of the event. B. Activity at pain onset can indicate triggers or causes. C. Medication compliance is important but not directly related to pain assessment. D. Description of pain (quality, type) aids in diagnosis. E. Pain intensity rating helps evaluate severity and monitor changes.