8.Fatima owed $9,500 in taxes for 2019 and made the following payments: estimated tax payments of $2,100 each quarter, $1,000 with her Form 4868 (request for automatic extension) in March, and the remaining $100 with her Form 1040 in July. Fatima's 2018 total tax was $8,000. What interest or penalty does she owe? A.Failure-to-pay penalty B.Interest on balance due C.Penalty on underpayment of estimated tax D.None of the above