Nandi Corporation adjusts and closes its accounts each December 31. The following 5 items may require adjustment at December 31, 2019, the corporation's accounting year-end: 1. Prepaid insurance at December 31, 2018 was $5,900. At year-end 2019 Nandi Corporation was informed by its insurance broker that exactly $18,200 of insurance expense was incurred by Nandi in 2019. During 2019 Nandi Corporation made payments of $16,000 which were debited to the insurance expense account. 2. The allowance for doubtful accounts has a credit balance of $21,500 on December 31, 2018. Specific accounts written off in 2019 totalled $24,000. What journal entry must be made to record this write-off? 3. The company had equipment on the books with an original cost of $82,100. Straight-line depreciation was taken over 10 years with six months' depreciation being taken in the first year of operating the equipment. Company policy is to not take depreciation in the year of sale of any plant, property and equipment asset. Accumulated depreciation was $28,735 at December 31, 2018. The equipment is sold in early 2019 for $50,000 cash. No journal entry has been made to record this disposal. 4. A $2,500 December 18, 2019 customer deposit for future services was inadvertently recorded as Sales Revenue. 5. Nandi holds a triple-A rated $50,000 bond (acquired in 2018; maturity date is October 31, 2022) as an investment that pays its 4% interest every October 31. No entry has been made for this investment during 2019. Required Prepare adjusting entries (on the following page), where required, as at December 31, 2019 for the above 5 items. If no adjusting entry is required, state why. (Narrative explanations for journal entries are not required.)