This class represents an answer or a response to a question on the Alcohol Use Disorders Identification Test (AUDIT) Assessment Instrument. This abstract class exists primarily to re-define the generic AssessmentEvent.responseItem.answer property to the AuditAssessment.responseItem.answer. In other words, of all the possible answers on all the possible kinds of assessment instruments, we are explicitly identifying the possible answers to the ten AUDIT questions. Note that because this class is abstract, implementers would likely not instantiate this class, but rather the six concrete sub classes.