The time period generally used to classify costs as fixed is

Unimportant

One year

Five years

Set by individual organizations

The relevant range used to classify costs as fixed is

Unimportant

Set by generally accepted accounting principles

Set by the Cost Accounting Standards Board

Set by individual organizations based on their current capacity

As a company produces more units within the relevant range, the difference between variable cost per unit and fixed cost per unit is

Variable cost per unit and fixed cost per unit both remain constant

Variable cost per unit and fixed cost per unit both change

Variable cost per unit changes and fixed cost per unit remains constant

Variable cost per unit remains constant and fixed cost per unit changes