Reese Company purchased office supplies costing $4,000 and debited Office Supplies for the full amount. At the end of the accounting period, a physical count of office supplies revealed $1,600 still on hand. The appropriate adjusting journal entry to be made at the end of the period would be

Debit Office Supplies Expense, $1,600; Credit Office Supplies, $1,600.
Debit Office Supplies, $2,400; Credit Office Supplies Expense, $2,400.
Debit Office Supplies Expense, $2,400; Credit Office Supplies, $2,400.
Debit Office Supplies, $1,600; Credit Office Supplies Expense, $1,600