Problem 12-32 (LO. 3, 7) In 2021, Geoff incurred $900,000 of mine and exploration expenditures. He elects to deduct the expenditures as quickly as the tax law allows for regular tax purposes. a. Complete the statements below regarding how Geoff's treatment of mine and exploration expenditures will affect his regular tax and AMT computations for 2021. Geoff's regular tax deduction for the mine exploration and development would be s 900,000 and his AMT deduction would be $ 90,000 in 2021, resulting in a positive AMT adjustment for each of the next nine years in the amount of $ adjustment of 810,000 In addition, Geoff will have a negative 90,000