Required: Prepare the required end-of-period adjusting entries for each independent case listed below: Case 1 Thomas Company, a private company, began the year with a $3,000 balance in the Office Supplies account. During the year, $8,500 worth of additional office supplies were purchased. A physical count of office supplies on hand at the end of the year revealed that S5,100 worth of office supplies were on hand at year end. No adjusting entry has been made until year end. Case 2 Carson Company has a calendar year-end accounting period. On July 1, the company purchased office equipment for $28,800. It is estimated that the office equipment will have a useful life of six years. No adjusting entry has been made until year end. Case 3 Chan Realty is in the business of renting several apartment buildings and prepares monthly financial statements. It has been determined that 3 tenants in S600 per month apartments and one tenant in a $1,000 per month apartment had not paid their August rent as at August 31. G