A company purchased office supplies costing $5100 and debited Supplies for the full amount. At the end of the accounting period, a physical count of office supplies revealed $920 still n hand. The appropriate adjusting journal entry to be made at the end of the period would be: O debit Supplies. $920; credit Supplies Expense, $920. debit Supplies, $4180; credit Supplies Expense, $4180. O debit Supplies Expense, $6020; credit Supplies, $6020. O debit Supplies Expense, $4180; credit Supplies, $4180