* According to a Financial Accounting Standards Board Statement, how are research and development costs accounted for? *A) They must be capitalized when incurred and then amortized over their estimated useful lives. * B) They must be expensed in the period incurred. * C) They may be either capitalized or expensed when incurred, depending upon the materiality of the amounts involved. * D) They must be expensed in the period incurred unless it can be clearly demonstrated that the expenditure will have alternative future uses or unless contractually reimbursable.