Answer:
A. $9,860 net increase in operating income if the ceiling fans are repaired.
Step-by-step explanation:
If the company don't do anything with defective fans, they still occurs manufacturing cost of $20,060 (=$59 * 340)
(1) if the company sell defective units, operating income is -12,240 or loss of $12,240 =(340*$23-$20,060)
(2) if the company process further for a cost of $41 each and then sell for the normal selling price, the operating income is -2,380 loss of $2,380= 340*($93-$41) - $20,060
So if the fans are repaired, the net increase in operation income is $9,860 =(-2,380-( -12,240))