PLZ HELP QUICKLY , GET BRAINLY

How are fixed costs different from variable costs?

A.) Fixed costs are the same for all businesses; variable costs apply to individual businesses alone.
B.) Fixed costs only exist in command economies; variable costs only exist in market economies.
C.) Fixed costs are costs associated with capital, such as machinery; variable costs are the cost of labor.
D.) Fixed costs do not change no matter how much a business produces; variable costs do change.