Which of the following is the least profitable investment for a game shop earning $2 profit from every game sold? (5 points) a Vehicle with $120 daily operating cost, delivering 80 games per day b Inventory software with $10 daily operating cost, saving 30 games per day from theft c Game cleaning system with $5 daily operating cost, increasing sales by 15 games per day d Electronic billboard with $20 daily operating cost, increasing sales by 20 games per day