In 2018, Edwards Corporation incurred research and development costs as follows: Materials and equipment 105,000 Personnel 120,000 Indirect costs 150,000 Total 375,000 These costs relate to a product that will be marketed in 2019. It is estimated that these costs will be recouped by December 31, 2021, but its process has not achieved economic viability. The equipment has no alternative future use. What is the amount of research and development costs that should be expensed in 2018? Select one: o a. 375,000 O b. 0. c. 270,000 d. 225,000