Final answer:
In scenario a, DEF Inc. would report a favorable temporary book-tax difference for the loss on land and an unfavorable temporary book-tax difference for the gain on equipment. In scenario b, DEF would report the same book-tax differences. In year 2, DEF would report no book-tax difference for the capital loss.
Step-by-step explanation:
For scenario a, in year 1, DEF Inc. would report a favorable temporary book-tax difference of $15,000 for the loss on land since it is tax-deductible. They would also report an unfavorable temporary book-tax difference of $10,000 for the gain on equipment, as the book gain is greater than the taxable gain. In year 2, DEF would report no book-tax difference for the capital loss of $2,000, as it is deductible for both book and tax purposes. For scenario b, in year 1, DEF Inc. would report a favorable temporary book-tax difference of $15,000 for the loss on land. They would also report an unfavorable temporary book-tax difference of $10,000 for the gain on equipment. In year 2, DEF would report no book-tax difference for the capital loss of $2,000, as it is deductible for both book and tax purposes.