6.which of the following statement is incorrect?

a. within the relevant rage, total fixed cost remains the same

b. fixed costs per unit remains costant

c. Variable costs per unit remains constant

d. Semi variable cost is also called mixed cost

.Production-cost cross-subsidization results froma.allocating indirect costs to multiple products.

b. assigning traced costs to each product.

c. assigning costs to different products using varied costing systems within the same organization.

d. assigning broadly averaged costs across multiple products without recognizing amounts of resources used by which products