C. Purchasing history of a business' customers D. A musician's audio recording files E. This test you are currently taking F. A business' web page G. A proprietary encryption algorithnm All of above I. All but B J. All but E K. All but F 10. (10 pts) A safe has a key pad with digits 0 to 9 on it. When a user enters the correct combination, the safe opens, otherwise it flashes a red LED three times and remains locked. The correct combination may contain 3, 4, or 5 digits, which is set by the safe's owner. If it takes 1 second to try one combination, what is the total amount of time for someone to open the safe with brutal force in the worst case? (4 pts) Copyright O by Shengli Yuan. All rights reserved. 2