Required information Problem 13-75 (LO 13-4) (Algo) [The following information applies to the questions displayed below.] Michael is single and 35 years old. He is a participant in his employer's sponsored retirement plan. How much can Michael contribute to a Roth IRA in 2023 in each of the following alternative situations? Note: Leave no answers blank. Enter zero if applicable. Problem 13-75 Part a (Algo) a. Michael's AG before the IRA contribution deduction is $61,000. Michael contributed $3,800 to a traditional IRA. b. Michael's AGI is $91,000 before any IRA contributions. c. Michael's AGI is $168,500 before any IRA contributions