Consider the environmental costs expended by Zelda Limited (your company) and its main competitors. Prevention costs Appraisal costs Internal failure costs External failure costs Zelda Ltd $20,000 $25,000 $5,000 $10,000 Dextra Ltd $45,000 $67,000 $120,000 $240,000 Creata Ltd $100,000 $25,000 $0 $0 Required: Comment on the relative proportions of each of the four categories of quality costs at Zelda Limited. Write a short paragraph explaining how Zelda Ltd is managing its environmental performance compared to its competitors.