For each of the following cases, determine whether the one year principle would apply.
(a) A defender has been in use for seven years and has negligible salvage value. Operating costs are €40 0 per year for electricity. Once every five years it is overhauled at a cost of €1000.
(b) A defender has been in use for seven years and has negligible salvage value. Operating costs are €40 0 per year for electricity. Once a year it is overhauled at a cost of €1000.
(c) A defender has been in use for two years and has negligible salvage value. Operating costs are €40 0 per year for electricity. Once a year it is overhauled at a cost of €1000.
(d) A defender has been in use for seven years and has current salvage value of €4000. Its value one year from now is estimated to be €4000. Operating costs are €40 0 per year for electricity. Once a year it is overhauled at a cost of €1000.
(e) A defender has been in use for seven years and has current salvage value of €4000. Its value one year from now is estimated to be €2000. Operating costs are €40 0 per year for electricity. Once a year it is overhauled at a cost of €1000.