14. Marlene and her ex-husband divorced three years ago. During the current tax year, she received $21,000 in child support for her 10-year-old son, who lives with her in the home she purchased last year. Marlene's former husband asked her to sign an agreement allowing him the dependency exemption for their child, but she refused. Marlene's salary is $75,000, she contributed $5,500 to a traditional IRA, and she earned $300 interest income on a savings account and another $200 of tax-exempt interest income. Marlene's parents forgave a $25,000 loan they'd made to her when she purchased her home, because they wanted to help her out. Marlene had itemized deductions totaling $15,600 in 2020. (10 points) a) What is Marlene's taxable income for 2020? b) Ignoring any tax credits, what is Marlene's income tax liability for 2020