Georgia Had AGI of $100,000 in 2018

Essay

Georgia had AGI of $100,000 in 2018. She donated Heron Corporation stock with a basis of $8,500 to a qualified charitable organization on July 5, 2018.
a. What is the amount of Georgia's deduction, assuming that she purchased the stock on December 4, 2017, and the stock had a fair market value of $15,000 when she made the donation?
b. Assume the same facts as in a., except that Georgia purchased the stock on July 1, 2010.
c. Assume the same facts as in a., except that the stock had a fair market value of $6,000 (rather than $15,000) when Georgia donated it to the charity.