Fern Company processes sugar beets in batches that it purchases from farmers for $72 a batch. A batch of sugar beets costs $11 to crush in the company's plant. Two intermediate products, beet fiber and beet juice, emerge from the crushing process. The beet fiber can be sold as is for $27 or processed further for $16 to make the end product industrial fiber that is sold for $40. The beet juice can be sold as is for $43 or processed further for $28 to make the end product refined sugar that is sold for $100. Which of the intermediate products should be processed further?