What your taxpayer seems to have is Designated Roth, which is not like Roth IRA, Roth 401(k) or any other Roth account. That's the B code.

The 5-year term has been met. That's Box 11.

The treatment would depend on the reason for the distribution.

You might want to read here:

https://www.irs.gov/retirement-plans/retirement-plans-faqs-on-designated-roth-accounts#2distribution...

and:

https://www.irs.gov/retirement-plans/plan-participant-employee/retirement-topics-designated-roth-acc...

Apply what you learn from your due diligence to the info there.