An attorney wishes to use medical records as evidence is a court hearing. She/he established an exception to the hearsay rule by . a. Having the court issue a Subpoena Duces Tecum b. Having the court issue a Subpoena Ad Testificandum c. Explaining the importance of the medical record to his trial to the judge d. Providing that the record is a business record, created during the normal course of business, made by persons with knowledge of acts, events and diagnoses, is an accurate, trustworthy documents, and with documentation that supports the bill