Stephanie is 12 years old and often assists neighbors on weekends by babysitting their children. Calculate the 2017 standard deduction Stephanie will claim under the following independent circumstances (assume that Stephanies parents will claim her as a dependent).

a. Stephanie reported $1,050 of earnings from her babysitting.

b. Stephanie reported $1,860 of earnings from her babysitting.

c. Stephanie reported $7,805 of earnings from her babysitting.