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4. The research and development division of a large corporation is considering the purchase of a new tunneling X-ray microscope for $335,625. The net benefits from gains in materials engineering is projected to be $108,750 in today's real dollars for the first year, increasing by an arithmetic gradient of $13,875 per year in real dollars for years 2 to 4. The unit will be depreciated under MACRS. Due to increasing advances in tunneling X- ray microscope technology, the unit will have $56,250 market value in today's real dollars at the end of the 4-year project life. During the 4-year analysis period, inflation is expected to be steady at 2.4% per year. The corporation has a combined state and federal income tax rate of 30.0%. The corporation requires a 15.0% after-tax market rate of return on its research and development investments. Should the X-ray unit be purchased? 4. The research and development division of a large corporation is considering the purchase of a new tunneling X-ray microscope for $335,625. The net benefits from gains in materials engineering is projected to be $108,750 in today's real dollars for the first year, increasing by an arithmetic gradient of $13,875 per year in real dollars for years 2 to 4. The unit will be depreciated under MACRS. Due to increasing advances in tunneling X- ray microscope technology, the unit will have $56,250 market value in today's real dollars at the end of the 4-year project life. During the 4-year analysis period, inflation is expected to be steady at 2.4% per year. The corporation has a combined state and federal income tax rate of 30.0%. The corporation requires a 15.0% after-tax market rate of return on its research and development investments. Should the X-ray unit be purchased