Problem 12-24 (LO. 2, 3, 4, 5) Use the following data to calculate Chiara's AMT base in 2021: Taxable income Positive AMT adjustments Negative AMT adjustments $248,000 73,000 25,000 30,000 AMT preferences Chiara will file as a single taxpayer and chooses to itemize her deductions. Click here to access the exemption table. Chiara's taxable income Plus or minus: $248,000 Plus: Equals: AMTI Less: Equals: AMT base