A company purchased office supplies costing $3,000 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: A) debit Supplies Expense, $3, 900; credit Supplies, $3, 900. B) debit supplies, $900, credit Supplies Expense, $900. C) debit supplies Expense, $2, 100; credit Supplies, $2, 100. D) debit supplies, $2, 100, credit Supplies Expense, $2, 100