Adams Corporation approved a plan of merger with Sten Corporation One of the determining factors in approving the merger was the strong financial statements of Sten which were audited by Schaefer \& Company CPAs. Adams had engaged Schaefer to audit Sten's financlal statements. While performing the audit, Schaefer falied to discover certain instances of fraud which have subsequently caused Adarns to suifer substantial losses. In orderfor Schaefer to be liable under common law, Adams, at a minimum, must prove that Schaefer: Multiple Choice Was ardinariy negligent. Was grossly negilgent Knew of the instances of fraud Acted reddessly or with lack of reasonable grounds for belief