On June, 30, 2015, a company purchased a two-year insurance policy for $18,000, paying cash and debiting Prepaid Insurance for the entire two-year premium amount. The adjusting entry on December 31, 2015 includes a: credit to Prepaid Insurance $4, 500. credit to Insurance Expense $4, 500. credit to Prepaid Insurance $9,000 debit to insurance expense $9,000