Answer:
There is no change in gross margin
Step-by-step explanation:
Under variable costing, there is no absorption of the fixed costs on the production cost per unit. The contribution margin is given by the income deducted by the variable costs.
In this case, the number of units sold remains the same as before, 30,000 units, while the variable cost per unit also remains the same. Therefore, there is no change in the company's gross margin.
*There would be a change in the gross margin if the company used absorption costing.