Fun Inc. is a calendar year corporation. Fun Inc. had no accumulated earnings and profits, but had $100,000 of current earnings and profits in 2012. On December 31, 2012, Fun Inc. distributed a total of $160,000 to its two equal shareholders, Jean and Jon. On the date of the cash distribution, Jean's basis in her Fun Inc. stock was $10,000 and Jon's basis in his Fun Inc. stock was $30,000. What is Jon's adjusted basis in his EFG Inc. stock after the distribution?
a. 0.
b. $5,000.
c. $15,000.
d. none of the above.