Answer:
It will decrease by 6,000 which is the operating contribtuion generated for the product before allocation of common fixed cost.
Step-by-step explanation:
We have to build the segment income statement
![\left[\begin{array}{ccccc}&A&B&C&Total\\$Sales&100000&90000&44000&234000\\$Variable Cost&-76000&-48000&-35000&-159000\\$Contribution&24000&42000&9000&75000\\$Tracable fixed&-9000&-18000&-3000&-30000\\$Operating Income&15000&24000&6000&45000\\$Fixed Cost&&&&-22700\\$Net Income&&&&22300\\\end{array}\right]](https://img.qammunity.org/2021/formulas/business/college/8oujvez5m4991j7koj1gi81ufqwnv44up7.png)
As the Product is generating a positive contribution for 6,000 it would be a financial disadvantage to discontinued. It is making a "loss" because of the common fixed cost allocated to the product not, the product.