In year 1 (the current year), OCC Corp. made a charitable donation of $200,000 to the Jordan Spieth Family Foundation (a qualifying charity). For the year, OCC reported taxable income of $1,500,000 before deducting any charitable contributions, before deducting its $20,000 dividends received deduction, and before deducting its $40,000 NOL carryover from last year. 

a. What amount of the $200,000 donation is OCC allowed to deduct for tax purposes in year 1?

b. In year 2, OCC did not make any charitable contributions. It reported taxable income of $300,000 before any charitable contribution deductions and before a $15,000 dividends received deduction. What book-tax difference associated with the charitable contributions will OCC report in year 2? Is the difference favorable or unfavorable? Is it permanent or temporary?

c. Assume the original facts and those provided in part b. In years 3, 4, and 5, OCC reported taxable losses of $50,000. Finally, in year 6 it reported $1,000,000 in taxable income before any charitable contribution deductions. It did not have any dividends received deduction. OCC did not actually make any charitable donations in year 6. What book-tax difference associated with charitable contributions will OCC report in year 6?