Answer:
direct material, direct labor, and variable manufacturing overhead
Step-by-step explanation:
Under variable costing of the product cost, it includes only three costs i.e direct material cost, direct labor cost, and the variable manufacturing overhead
In mathematically,
Product cost = Direct material cost + direct labor cost + variable manufacturing overhead
And, in case of the period cost, it includes fixed manufacturing overhead, variable selling, and administration expenses, and fixed selling and administration expenses