Lake, cpa, is auditing the financial statements of gill co. gill uses the edp service center, inc., to process its payroll transactions. edp’s financial statements are audited by cope, cpa, who recently issued a report on edp’s internal control. lake is considering cope’s report on edp’s internal control in assessing control risk on the gill engagement. what is lake’s responsibility concerning making reference to cope as a basis, in part, for lake’s own unmodified opinion?