Ideally, a Health History Should Come from a Patient, but There

Ideally, a health history should come from a patient, but there are circumstances in which the patient is unable to answer health history questions. In the case that the patient is unable to answer the health history questions, which is acceptable documentation?

A) Patient is unable to answer questions and is unreliable due to decreased cognition.
B) Patient's family member is reporting the health history on behalf of the patient.
C) Patient is unable to answer health history questions due to recent mild stroke.
D) All of the above.