Which of the following statements is incorrect in relation to power management? power management is getting attention because of environmental considerations, and because of battery powered computers reducing energy consumption can be achieved by reducing the number of transistors on a chip from hardware perspective, an approach to battery conservation is to provide several states to the CPU, memory, I/O devices, such as: on, sleeping, hibernating, and off from operating system perspective, it needs to make a decision when and which devices to shut down, in order to conserve energy: the most important ones are the display and the hard disk