Which of the following is (are) required to calculate MACRS-GDS depreciation deductions? 1. Property class 2. salvage value 3. First cost 4. Annual maintenance costs (a) 1 and 3 only (b) 2 and 3 only (c) 1, 2 and 3 (d)1, 2, 3, and 4 (Unrelated to Above) An economist has predicted that there will be 6% inflation per year, inflation of prices during the next 30 years. If this prediction proves to be correct, an item that presently sells for 10 dollars will sell at what price in 30 years. (a) 28.11. (b) 57.43 (c) 19.67 (d) 67.27