Please help! Traditional 401K & IRA

Ian retired in December of 2021 at the age of 71 (his birthday is January 6). lan's retirement account was valued at $564,000 at the end of 2020 and $580,000 at the end of 2021 . He has had all of his retirement accounts open for 15 years. Note: Leave no answers blank. Enter zero if opplicable. What is lan's required minimum distribution for 2022 under each of the following alternative scenarios? (Use Exhibit 13-3) Required: o. lan's retirement account is a traditional 401(k) account. b. lan's retirement account is a Roth 401(k) account. c. lan's retirement account is a traditional IRA. d. Lar's retirement account is a Roth IRA