Jill, age 20 and single, is a full-time student at the University of Illinois. Her parents provide over one-half of her support and claim her as a dependent on their tax return. In 2018, Jill had $7,400 of income, which consisted of $6,000 in wages earned during the summer as a lifeguard, and $1,400 interest on a savings account. Her itemized deductions for 2018 were $400.A. Jill's gross income is:B. Jill's standard deduction is:C. Jill's personal exemption isD. Jill's taxable income is: