27. Hall Co. incurred research and development cost in 2015 as follows: Materials used in research and development projects $650,00 Equipment acquired that will have alternate future uses in future research and development projects 3,000,000 Depreciation of 2015 on above equipment 500,000 Personnel costs of persons involved in research and development projects 750,000 Consulting fees paid to outsiders for research and development projects 300,000 Indirect costs reasonably allocable to research and development projects 225 000 The amount of research and development costs charged to Hall's 2015 income statement should be a. $ 1,700,000 b. $2,000,000 c. $2,425,000 d . $4.700.000