Miranda prepared a tax return for Fred and Carol. Before e-filing their return, who must sign Form 88797 49 Marks: 1 Choose one answer a Miranda b. Fred and Carol c. Miranda and either Fred or Carol d. Miranda. Fred, and Carol Which of the following three factors determine most taxpayers' filing requirements? 50 Marks: 1 Choose one answer. a Gross income, filing status and dependents b. Age, occupation, and gross income c Fling status, age, and dependents d. Gross income, filing status, and age