answer questions A through E clear

For the following taxpayers, determine if they are required or not required to file a tax return in 2021. Please state either required or not required as your answer to each question below. a) Ricko, single taxpayer, with gross income of $15,000. b) Fantasia, head of household with gross income of $17.500. c) Ken and Barbie, mamed taxpayers with no dependents, with gross income of $20,000. d) Dorothy and Rudolf, married taxpayers, both age 68, with gross income of 525,500 e) Janyce, single taxpayer, age 73, with gross income of $13,500