Golden,Inc Brown Company Has Offered to Sell Golden 5,000 Units of in One

Golden,Inc.has been manufacturing 5,000 units of Part 10541,which is used in one of its products.At this level of production,the unit product cost of Part 10541 is as follows:
$\begin{array}{l}\begin{array}{lll}\text { Direct Materials}\\\text { Direct Labour}\\\text { Variable Manufacturing Overhead}\\\text { Fixed Manufacturing Overhead}\\\text { Unit Product Cost}\\\end{array}\begin{array}{lll}\$ 2 \\\$ 8 \\\$ 4 \\\$ 6 \\\$ 20\end{array}\end{array}$
Brown Company has offered to sell Golden 5,000 units of Part 10541 for $19 a unit.Golden has determined that two-thirds of the fixed manufacturing overhead will continue even if Part 10541 is purchased from Brown.Assume that direct labour is an avoidable cost in this decision.To determine whether to accept Brown's offer,what are the relevant costs to Golden of manufacturing the parts internally?

A) $70,000.
B) $80,000.
C) $90,000.
D) $95,000.