Six months ago, you purchased a new laptop. Since then, you notice that the battery life has been steadily going down. When it was new, and full charge lasted about three hours. Now your lucky to get two hours before the battery charge level drops the 5%. What should be your first step to correct the problem?a. Calibrate the batteryb. Replace the power meter chip on the batteryc. Clean the contacts on the batteryd. Buy a new battery