please help to answer this income tax accounting question

To qualify for like-kind exchange treatment under 1031, which of the following requirements must be satisfied? a. The form of the transaction is a sale or exchange, b. Both the property transferred and the property received are held either for productive use in a trade or business or for investment. c. The exchange must be completed by the end of the second tax year following the tax year in which the taxpayer relinquishes their like-kind property. d. Only "The form of the transaction is a sale or exchange" and "Both the property transferred and the property received are held either for productive use in a trade or business or for investment