Use the LCM approach: MARR=9% Option A: Life = 6 years, Initial cost = $28, 000, Annual operating cost = $2, 000 Option B: Life = 3 years. Initial cost = $23, 000, Annual operating cost = $3, 000 How much is saved by choosing investment B in this case? Enter a whole number to the nearest hundred. Do include a comma, do not include $. Answer exactly in the form: X, Y00