The compressor division at norco corporation can buy the coils it requires either from the company's coil division or from the market. assuming the coil division has enough idle capacity to satisfy the compressor division’s requirements, which of the following will be the lower limit for setting the transfer price between the two divisions?
a. selling price per unit of the coil division.
b. cost of buying from outside suppliers for compressor division.
c. variable cost of production for coil division.
d. average opportunity cost of lost sales for coil division.

On december 31, 2016, the decarreau, andrew, and bui partnership had the following fiscal year-end balance sheet: cash $10,000accounts receivable $20,000inventory $25,000plant assets - net $30,000loan to decarreau $18,000total assets $103,000accounts payable $14,000loan from bui $15,000decarreaua, capital (20%) $32,000andrew, capital (10%) $23,000bui, capital (70%) $19,000total liab./equity $103,000the percentages shown are the residual profit and loss sharing ratios. the partners dissolved the partnership on january 1, 2017, and began the liquidation process. during july the following events occurred: * receivables of $18,000 were collected.* all inventory was sold for $15,000.*all available cash was distributed on january 31, except for$8,000 that was set aside for contingent expenses. the book value of the partnership equity (i. e., total equity of the partners) on december 31, 2016 isa. $58,000b. $71,000c. $66,000d. $81,000