hich of the following statements is false when considering the behavior of a mixed cost within the relevant range?

Multiple Choice

The variable portion of a mixed cost causes the total amount of a mixed cost to decrease when the level of activity decreases.

The total amount of a mixed cost will increase when the level of activity increases.

The average mixed cost per unit will decrease when the level of activity decreases.

The fixed portion of a mixed cost does not change as the level of activity increases.