can you please solve this with an explanation

11) Emily, who is single, plans on reporting $30,475 of taxable income for 2019 (all from a part-time job). Emily is considering a second part-time job that would give her an additional $10,000 of taxable income. By how much will the income from the second job increase her tax liability? A. $1,000 B. $2,400 C. $1,200 D. $1,300