Blue Spruce Corp. purchased office supplies costing $8120 and debited Supplies for the full amount. At the end of the accounting period, a physical count of office supplies revealed $2900 still on hand. The appropriate adjusting journal entry to be made at the end of the period would be: debit Supplies, $2900; credit Supplies Expense, $2900. debit Supplies, $5220; credit Supplies Expense, $5220. debit Supplies Expense, $2900; credit Supplies, $2900. debit Supplies Expense, $5220; credit Supplies, $5220