Which of the following must file a tax return in 2021? O None of the taxpayers listed must file. O Alioune, 20 years old, single, earns wages of $6,000, $2,000 of dividends, $300 of self-employment income. O Perry, 84 years old, single, has $14,000 of investment income. Only Perry and Janet must file. Janet, 35 years old, married but living separately from her spouse. Her only income is $5,000 from investments