(Part SA) If we were to give up one unit of resource 1, the…

(Part SA) If we were to give up one unit of resource 1, the profit would decrease by $1.3. Over what range of RHS values could we rely upon this value?  I) up to 2740 additional units II) up to 914 less units III) up to 520 additional units IV) up to 260 less units