Required information Problem 13-64 (LO 13-4) (Static) The following information applies to the questions displayed below) William is a single writer (age 35) who recently decided that he needs to save more for retirement. His 2020 AGI before the IRA contribution deduction is $66,000 (all earned income) (Leave no answer blank. Enter zero if applicable.) Problem 13-64 Part a (Static) a. If he does not participate in an employer-sponsored plan, what is the maximum deductible IRA contribution William can make in 2020? Maximum deductible IRA contribution *** b. If he does participate in an employer-sponsored plan what is the maximum deductible IRA contribution Wiliam can make in 2020? Maximum deductible IRA contribution c. Assume he does participates in an employer-sponsored plan and his AGI before the IRA contribution deduction is 576,000. What is the maximum deductible IRA contribution William can make in 2020? Maximum deductible IRA contribution