A 1099-R with a code G in box 7 is always a rollover to a Traditional IRA unless it was rolled (converted) to a 401(k) Roth or a Roth IRA. If neither of those then the only remaining possibility is a Traditional IRA so asking is not necessary.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**