Better Mousetraps has developed a new trap. It can go into production for an initial investment in equipment of $6million. The equipment will be depreciated straight-line over 6 years but in fact, it can be sold after 6 years for $500,000. The firm believes that working capital at each date must be maintained at a level of 10% of next year's forecast sales. The firm estimates production costa equal to $1.50 per trap and believes that the traps can be sold for $4 each. Sales forecasts are given in the following table. The. project will come to an end in 6 years when the trap becomes technologically obsolete. The firm's tax bracket is 40%, and the required rate of return on the project is 12%. a. What is project NPV? (Negative amount should be indicated by a minus sign. Do not round intermediate calculations. Enter your answer in millions rounded to 3 decimal places.) b. By how much would NPV increase if the firm uses double-declining balance depreclation with a later switch to straight-line when remoining project life is only two years? (Do not round intermediate calculations. Enter your answer in millions rounded to 3 decimal places.)