Which Statement Best Describes the Role of External Auditors When

Which statement best describes the role of external auditors when auditing a large public company?

A) Examine the organization's accounting for a sample of business transactions to provide reasonable assurance that the financial statements are presented fairly
B) Examine the organization's accounting for a sample of business transactions to guarantee that the financial statements are presented fairly
C) Examine the organization's accounting for every business transaction to provide reasonable assurance that the financial statements are presented fairly
D) Examine the organization's accounting for every business transaction to guarantee that the financial statements are presented fairly