Match the following terms with their definitions:
___ A. GAAS
___ B. Tracing
___ C. Qualified opinion
___ D. GAAP
___ E. Vouching
___ F. Unqualified opinion
1. Rules for preparing financial statements
2. When accountants check backwards to ensure there are data to support a transaction
3. Clean opinion
4. Rules for conducting audits
5. When accountants check a transaction forward to ensure it has been properly recorded
6. When there is some uncertainty in the financial statements