Khadija is single and filing her income tax return. Her taxable income in 2021 was $96,504.00. a. Find the amount of federal income tax she must pay. \$ b. If Khadija paid $615 in each of her 12 paychecks for the year, does she still owe money or does she receive a refund? no refund and no further payment needed receives a refund still owes money c. Find the amount she still owes or the amount of refund. $