of Susan's 2019 income tax return includes income from employment, a business and the disposition of capital properties. Her balance outstanding relating to this return is $1,500. When must it be paid to avoid interest charges? Select one: O a. December 31, 2019. O b. April 30, 2020. O c. June 15, 2019. O d. June 30, 2020.

Susan's 2019 income tax return includes income from employment, a business and the disposition of capital properties. Her balance outstanding relating to this return is $1,500. When must it be paid to avoid interest charges? Select one: a. December 31, 2019. b. April 30,2020 . c. June 15,2019. d. June 30,2020