Check my work 10 Mr. and Mrs. Keppner file a joint income tax return. Assume the taxable year is 2018 0.58 points a. Compute their standard deduction assuming that Mr. Keppner is age 68, and Mrs. Keppner is age 60. b. Compute their standard deduction assuming that Mr. Keppner is age 70, and Mrs. Keppner is age 68. c. Compute their standard deduction assuming that Mr. Keppner is age 70, and Mrs. Keppner is age 68. Mrs Keppner is legally blind eBook Print References Complete this question by entering your answers in the tabs below Required A Required B Required C Compute their standard deduction assuming that Mr. Keppner is age 68, and Mrs. Keppner is age 60 Standard deduction Required A Required B>