Three years ago, Iris purchased 1,000 shares of ABC, Inc. for $10 per share. She signed an agreement with the company that allowed the company to use her dividend payments to purchase additional shares for her. Over the last 5 years, Iris received a total of $1,200 in dividend payments, which purchased an additional 100 shares of stock. If Iris sells all of her shares for $24,000, what is her taxable gain? $0. $12,800. $14,000. $24,000