Ian retired in December of 2021 at the age of 71 (his birthday is January 6 ). lan's retirement account was valued at $445,000 at the end of 2020 and $450,000 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 applicable. What is lan's required minimum distribution for 2022 under each of the following alternative scenarios? (Use Extibit 13.3) Required: a. 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. lan's retirement account is a Roth IRA. FXIIBTT 13-8 2022 Applicable Percentages for Saver's Credit by Filing Status and AGI