A transaction completed by Norton Company caused a $4,000 increase in both the total assets and the total liabilities. This transaction could have been
◦ investment by the owner of an additional $4,000.
◦ purchase of office equipment for $12,000, paying $8,000 cash, with the rest on account.
◦ purchase of office equipment, paying $4,000 cash, and $8,000 on account.
◦ None of these answers are correct.