Mary exchanged an office building used in her business for some land. Mary originally purchased the building for $45,000, and it had an adjusted basis of $20,000 at the time of the exchange. The land had a fair market value of $40,000. Mary also gave $4,000 to the seller in the transaction. What is Mary's adjusted basis in the land after the exchange? Group of answer choices
a. $20,000b. $24,000c. $36,000d. $40,000e. none of these choices are correct