39. LO.3, 8 Helen Carlton acquired used equipment for her business at a cost of $300,000. The equipment is five-year class property for regular income tax purposes and for AMT purposes. Helen does not claim any additional first-year depreciation. a. If Helen depreciates the equipment using the method that will produce the greatest current deduction for regular income tax purposes, what is the amount of the AMT adjustment? Helen does not elect 179 limited expensing. b. How can Helen reduce the AMT adjustment to $0? What circumstances would motivate her to do so? c. Draft a letter to Helen regarding the choice of depreciation methods. Helen's address is 500 Monticello Avenue, Glendale, AZ 85306