When Reviewing the Medical Record of a Patient,the Date of the Event

When reviewing the medical record of a patient,the date of the event is deemed significant for which of the following reasons?

A) It provides a mechanism to verify the accuracy of patient reported medical history.
B) It determines the acuteness of the patient's medical situation.
C) It is necessary for reimbursement documentation.
D) It determines the onset of an episode of care.