Managers make assumptions in CVP analysis. These assumptions include: $($Check all that apply.$)$

Multiple select question.

costs are linear within the relevant range.

unit sales do not change.

some units produced are not sold.

constant fixed cost per unit.

costs can be classified as variable or fixed.

total variable costs do not change.

Multiple choice question.

$1$:$2\mathrm{.}5$

$2\mathrm{.}5$:$10$

$10$:$2\mathrm{.}5$

$4$:$1.$