A company purchased office supplies costing $5,000 and debited Supplies for the full amount. At the end of the accounting period, a physical count of office supplies revealed $900 still on hand. The appropriate adjusting journal entry to be made at the end of the period would be debit Supplies, \$4,100; credit Supplies Expense, \$4,100. debit Supplies Expense, $4,100; credit Supplies, $4,100. debit Supplies Expense, \$5,900; credit Supplies, \$5,900. debit Supplies, \$900; credit Supplies Expense, $900