Please answer this multiple choice question please:

A firm had R&D expenses of $40 million in the most recent year. You believe that a four-year amortizable life is appropriate for this firm and the R&D expenses for the past four years have amounted to $32 million, $20 million, $16 million, and $8 million respectively. Assuming the research asset expenses in the most recent year does not get depreciated, what is your estimate of the value of the research asset?

A. $58 million

B. $68 million

C. $78 million

D. $86 million