In 2015, Mr. Chang purchased 50 shares of common stock in Corporation D for $1,000. In 2017, Corporation D declared a stock dividend of 2 shares of its common stock for each 10 shares held. In 2020, Ds common stock split 2-for-1 at a time when the fair market value was $20 a share. What is Mr. Changs basis in each of his shares of Ds stock (rounded to the nearest dollar) if both distributions were tax-free and all the stock received was identical to the stock purchased?

• A.$20 for 100 shares and $0 for all additional shares.

• B.$8 per share.

• C.$20 per share.

• D.$17 for 60 shares and $20 for 60 shares.