The information that Lily will find on a different document is c.State income taxes she's already paid.
What is the 1040 form?
- This is a tax form for the recording of one's federal income tax.
- Contains taxes already paid and income earned.
As the 1040 form is a federal form, state income taxes that Lily has already paid will not be found here but rather in another document. She can then include them for deduction.
In conclusion, option C is correct.
Find out more on the 1040 form at https://brainly.com/question/4120733.
