william and maria smith are a married couple filing jointly. they have no children and report the following items in 2009: Taxable income: $70,000 Tax preferences: 20,000 AMT adjustments related to itemized deductions: 15,000 Regular tax liability: 9,875 A. What is the Smith's AMT liability? B. What woud be William's AMT liabilityif he were an unmarried taxpayer filing single with a regular tax liability of $13,320