Question: On September 3, 20X3, Haynes purchased $1,000 of supplies, and debited the Supplies account. At the end of September, $600 of these supplies remained on hand. The adjusting entry at the end of September would include: none of these answers are correct a debit to Supplies Expense and a Credit to Supplies for $400. a debit to Supplies and a Credit to Supplies Expense for $600. a debit to Supplies Expense and a Credit to Supplies for $600. a debit to Supplies and a Credit to Supplies Expense for $400.