The only difference between variable and absorption costing is the expensing of ) direct manufacturing costs b) variable marketing costs c) fixed manufacturing costs d) variable administrative costs

The correct answer is C. fixed manufacturing costs  

Explanation:

We can see that in Absorption costing, all the costs are included and that includes fixed costs. on the other hand,  in the variable costing, it is only included the variable costs that are directly incurred in production.

answer; i believe the correct answer is (a) purchase of treasury stock;