Fidelity simply asked if you wanted 10% withheld for taxes. Had any amount of your 2017 distribution been withheld for taxes, the withholding would have been credited on your 2017 tax return against your overall 2017 tax liability, not against any particular item of taxable income.
What is the code (or codes) in box 7 of the 2017 Form 1099-R provided by Fidelity?
