Requirement $2.$ At what level of revenues will Color Rugs earn the same operating income under either$$ option? a$.$ For what range of unit sales will Color Rugs prefer option$1?$ b$.$ For what range of unit sales will Color Rugs prefer option$2?$

Begin by determining the formula to calculate the operating income where each option is equal. $($Abbreviation used: FC$=$ Fixed$$ costs, SP$=$ Selling$$ price, VC$=$ Variable$$ costs, Q$=$ Quantity of units$$ sold.$)$