Doug and Daphney file a joint rotun Doug Gamed 534 000 during the year before losing hisob Daphney received Social Security benefits of 55.600 Requirements a. Determine the taxable portion of the Social Security benefits b. What is the taxable portion of the Social Security benefits of Doug earned $44000? Requirement a Determine the taxable portion of the Social Security benefits Begin by computing the provisional income Only selecters that are applicable to Dan and Diana (Leave unused coils blank do not select a labor enter) Pus Provisional income The taxable portion of the Social Security benefits is