Dillon is auditing Byrne Corp., a public company. Byrne recently implemented a new accounting system. As part of the INTERNAL CONTROL OVER FINANCIAL REPORTING audit, Dillon discovers that material controls surrounding access to the new software were only partially installed) Dillon should: a. depending on the circumstances, the auditor may choose any of the above. b. withdraw from the audit. c. issue a disclaimer opinion on the ICFR.X d. issue an adverse opinion on the ICFR.