Answer
The company should sell XY as it is because processing it further would reduce its income by $(33,000)
Step-by-step explanation
A company should process further a product if the additional revenue from the split-off point is greater than than the further processing cost.
Product A $
Additional revenue ( 31 -26)× 6,600 33,000
Further processing cost (10× 6600) ( 66,000)
Loss from further processing (100) (33,000)