On a Michigan Return, What distribution code do I select for a Traditional IRA to Roth IRA Conversion?

After entering the Code 7 in Box 7 of my 1099R for my Roth conversion; the next TurboTax scree asks: "Where is your distribution From?" Do I choose "C" or "N" in the options below? If I choose "N"; I incur Mi-State Taxes on my Conversion If I choose "C"; I am returned my Mi-State Taxes that where withheld during the conversion. _____________________ The Key to Choose From _____ Michigan Special Handling of Pension Distributions TurboTax Michigan uses the following pension codes: M - Military pension for retirement from the US Armed Forces G - Qualified government or Social Security C - Current year conversion from a traditional IRA to a Roth IRA N - Pension/IRA distributions received before retirement age/None of the Above P - Other qualified IRA distribution P - Qualified private-source pension