A new optical reader for scanning documents is being considered by a retail bank. The new system has a fixed cost of €30,000 per year and a variable cost of €2.5 per batch. The cost of the new scanner is €100,000. The bank charges €10 per batch for scanning documents and it believes that the demand for its scanning services will be 2,000 batches in year 1, 5,000 batches in year 2, 10,000 batches in year 3, and then 12,000 batches per year from year 4 onwards. If the realistic discount rate for the bank is