Which of the following statements are true

Dollar sales for company to break even $=($Traceable fixed expenses $+$ Common fixed expenses$)-$: Overall segment margin ratio.

Dollar sales for company to break even $=($Traceable fixed expenses $+$ Common fixed expenses$)-$: Overall contribution margin $($CM$)$ ratio.

Dollar sales for company to break even $=($Traceable fixed expenses $+$ Common fixed expenses$)-$: Overall contribution margin $($CM$)$ per unit.

Dollar sales for company to break even $=($Traceable fixed expenses $+$ Common fixed expenses$)-$: Overall variable expense ratio.