Goldie sells 600 shares of Bear Corporation stock for $9,000 on December 14, 2021. She paid $27,000 for the stock in February 2018.
a. Assuming that Goldie has no other capital asset transactions in 2021, what is the effect of the sale on her 2021 income?

b. Assume that Goldie has no capital asset transactions in 2022. What is the effect of the Bear Corporation stock sale on her 2022 income?

c. On July 2, 2023, Goldie sells 100 shares of Panda common stock for $12,400. Goldie purchased the stock on September 4, 2021, for $7,500. What is the effect of the sale on Goldie's 2023 income?