Answer: The correct answer is " b. $0 and $450,000. ".
Explanation: First we must calculate the amount for which we change the warehouse ($ 350,000 + $ 150,000) = $ 500,000.
The adjusted base of the warehouse was $ 600,000.
Therefore there is a loss of $ 100,000, which is not recognized because it is not realized at that time in the face of an exchange of such characteristics, the base of the office building must be calculated taking into account the postponed loss:
Fair market value ($ 350,000) + Postponed loss ($ 100,000) = $ 450,000.