Kristina purchased 100 shares of Fun, Inc. at $9 per share last year. This year, Fun, Inc. stock dropped to $6 per share and Kristina sold her 100 shares. Three weeks after selling her original 100 shares, Kristina purchases an additional 100 substantially identical shares of Fun, Inc at $5 per share. What is her cost basis on the new 100 shares? $500. $900. $600. $800. Page 14 of 21