Choice "A" is correct. An auditor may report on summary financial statements that are derived from a complete set of financial statements only if the auditor indicates whether the information is consistent in all material respects with the complete set of financial statements.
Choice "c" is incorrect. The auditor can issue a qualified opinion on the audited financial statements from which the summary financial statements are derived.
Choice "b" is incorrect. Summary financial statements do not include all of the disclosures that are included in a complete set of financial statements.
Choice "d" is incorrect. There is no requirement that prior year's summary financial statements be presented in comparative form with the current year's summary financial statements.