For each of the situations listed below, compute the taxable income for the taxpayer for 2021. Show appropriate supporting calculations for your answer. LIST OF TAXPAYER SITUATIONS TO COMPUTE TAXABLE INCOME FOR TAXPAYER FOR TAX YEAR 2021 (a) Bill and Jane, ages 40 and 41, respectively, are married and file a joint return. In addition to four dependent children, they have adjusted gross income (AGI) of $125,000 and itemized deductions of $27,000. (b) Sybil, age 40, is single and supports her dependent parents who live with her, as well as her grandfather who is in a nursing home. She has AGI of $80,000 and itemized deductions of $8,000 Martin, age 52, is a surviving spouse. His household includes two unmarried stepsons who qualify as his dependents. He has AGI of $75,000 and itemized deductions of $10,100. (d) Bonnie, age 30, is an abandoned spouse who maintains a household for her three dependent children. She has AGI of $58,000 and itemized deductions of $10,650. (e) Zhang, age 40, is divorced but maintains the home in which he and Lei, his daughter, live. Lei is single and qualifies as Chang's dependent. Chang has AGI of $64,000 and itemized deductions of $9.900