On July 1, 2012, Louis Herr exchanged an office building having a fair market value of $400,000, for cash of $80,000 plus an apartment building having a fair market value of $320,000.  Herr’s adjusted basis for the office building was $250,000.  How much gain should Herr recognize in his 2012 income tax return?
A. $330,000

B. $ 80,000

C. $0

D. $150,000