Linda, who has AGI of 120,000 in 2013, contributes stock in Mauve Corporation (a publicly traded corporation) to the Salvation Army, a qualified charitable organization. The stock is worth $65,000, and Linda acquired it as an investment four years ago at a cost of $50,000.

a) What is the total amount that Linda can deduct as a charitable contribution, assuming she carries over any disallowed contribution from 2013 to future years?

b) What is the maximum amount that Linda can deduct as a charitable contribution in 2013?