On January 1, 2017, Grand Haven, Inc., reports net assets of $933,650 although equipment (with a four-year remaining life) having a book value of $536,000 is worth $598,250 and an unrecorded patent is valued at $54,900. Van Buren Corporation pays $840,640 on that date to acquire an 80 percent equity ownership in Grand Haven. If the patent has a remaining life of nine years, at what amount should the patent be reported on Van Buren's consolidated balance sheet at December 31, 2018?

A) $34,160.

B) $38,430.

C) $48,800.

D) $42,700.