$4)$ cannot be determined without actual cash flows

Question $9($Mandatory$)(0\mathrm{.}3$ points$)$

The degree of operating leverage is defined as:

$1)\backslash \%$ change in EBIT$/\backslash \%$ change in contribution margin

$2)\backslash \%$ change in EBIT$/\backslash \%$ change in variable cost

$3)\backslash \%$ change in sales$/\backslash \%$ change in EBIT

$4)\backslash \%$ change in EBIT$/\backslash \%$ change in sales

Question $10($Mandatory$)(0\mathrm{.}3$ points$)$

The director of capital