Donna donates stock in Chipper Corporation to the American Red Cross on September 10, 2021. She purchased the stock for $18,100 on December 28, 2020, and it had a fair market value of $27,000 when she made the donation. a. What is Donna's charitable contribution deduction? The stock is treated as property and Donna's charitable contribution deduction is $ for tax purposes. b. Assume instead that the stock had a fair market value of $15,000 (rather than $27,000) when it was donated to the American Red Cross. What is Donna's charitable contribution deduction