Question 40 (1 point) Toni claims her father as a dependent. The father is 80 years old. The father's only source of gross income is some interest he earns from a savings account. The father's gross income threshold for purposes of having to file a tax return for 2019 is: 1) $2,300 2) $2,750 O3) $13,300. 4) $1,100. 5) $1,650