Clampett, Inc

Clampett, Inc. has been an S corporation since its inception. On July 15, 2017, Clampett, Inc. distributed $50,000 to J. D. His basis in his Clampett, Inc. stock on January 1, 2017, was $30,000. For 2017, J. D. was allocated $10,000 of ordinary income from Clampett, Inc. and no separately stated items. What is J. D.'s basis in his Clampett, Inc. stock after all transactions in 2017?

A) $40,000.
B) $30,000.
C) $20,000.
D) $10,000.
E) None of these.