Atlantic Corporation owns 100% of the stock of Pacific Corporation and 80% of the stock of Arctic Corporation. Atlantic and Pacific have always been profitable, but Arctic is profitable in some years and loses money in other years. Arctic's losses are funded by loans from Atlantic. The three corporations currently file separate returns. In 2023, the corporations have taxable income (loss) as follows: Atlantic 4,000 Pacific 1,000 Arctic (2,000) 

Can the corporations file a consolidated return in 2023? If so, what would be the benefit or detriment? Explain your answer.