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[11/14] 4. Design a backup strategy for a computer system. One option is to use plug-in external disks, which cost $150 for each 500GB drive. Another option is to buy a tape drive for $2500, and 400GB tapes for $50 a piece. A) Assume you have 1TB of data to back up. How much would a disk backup system cost. B)How much would a tape backup system cost for 1TB? How large would each backup have to be in order for a tape strategy to be less expensive? D) What kind of backup strategy favors tapes? (5 points)