What internal control test would be used to test each of the following controls/questions with respect to Receivables? For each test, please indicate whether the test is Reperformance, Inspection, Inquiry, or Observation. 1. Are credit and collection and write off policies and procedures current and in writing? 2. Are these policies and procedures clearly stated and systematically communicated? 3. Are the responsibilities for maintaining detailed accounts receivable records segregated from collections, disbursement, and general ledger posting functions? 4. Do controls in the system exist that provide assurances that individual receivable records are posted only from authorized source documents? 5. Are billings controlled and properly accounted for? 6. Are aggregate collections onaccounts receivable reconciled against postings to individual receivable accounts? 7. Are all valid receivables promptlyrecorded? 8. Are aged accounts receivable balances periodically reviewed by supervisory personnel? 9. Do adequate procedures exist for follow-up and collection of delinquent accounts? 10. Are there controls to insure thatindividuals with delinquent accounts are precluded from receiving additional credit? 11. Are delinquent accounts reviewed andconsidered for charge-off on a timely basis? 12. Are write-offs or other reductions of receivables, including non- cash credits, credit memos, and allowances, formally approved by senior officials not involved in the collection and recording function? 13. Do procedures exist that ensure that interest and penalties are properly charged on delinquent accounts? 14. Are credit balances periodically reviewed?