(TCO H) Mike audits the financial statements of a small business. During the course of his audit, he notices that all five members of top management have purchased new BMWs. Given that each manager's salary is less than $100,000 per year,Mike becomes suspicious about how all five of them were able to buy such expensive automobiles. He decides to double-check the bank statements for the year and postings to expense accounts that might indicate improper expenditures. Mike's actions demonstrate:

professional skepticism.

objective decision making.

due care.

All of the above