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Use the following information to answer questions 6 through 10. Tax Masters, Inc. reported the following information about the cost of its tax preparation business for the first half of the year 6. Use the high-low method to estimate the variable cost per tax retum. a. $32.00 per return b. $48.28 per return c $65.00 per return d. $40.00 per return 7. Use the high-low method to estimate the fixed cost component of tax preparation cost. 8. Use the high-low method to estimate tax preparation cost for a quarter in which 35,000 tax returns are expected