Determine the maximum contribution that can be made to a Keogh plan in each of the following cases. In all instances, the individual is self-employed, and the self-employment tax reduction has already been taken Required: a. Self-employment income of $64.000. b. Self-employment income of $64,000 and wage income of $35,000. c. Self-employment income of $155.000 d. Self-employment income of $300,000 Amount a. Maximum Keogh plan contribution b. Maximum Keogh plan contribution Maximum Keogh plan contribution a. Maximum Keogh plan contribution