Amber's employer, Magenta, Inc., has a $401($k$)$ plan that permits salary deferral elections by its employees. In $2023,$ Amber is $29$ years old, her filing status is single, she earns $$110,000$ in salary, and her taxable income is $$90,000.$ Amber contributes $$10,000$ to the $401($k$)$ plan during $2023.$ How much did she save in federal income taxes by making contributions to the $401($k$)$ plan?

Question $4$ options:

a$)$

$$2,400$

b$)$

$$7,800$

c$)$

$$2,200$

d$)$

$$7,600$

e$)$

$$-0-$