India's Tata Group is a diversified group. Some of its largest companies are: Tata Steel, Tata Motors, Tata Consultancy Services (IT), Tata Power (electricity generation), Tata Chemicals, Tata Tea, Indian Hotels, and Tata Communications. How do you think Tata Group's recent adoption of EVA as a performance management tool is likely to influence the way in which it allocates investment among the companies listed above?