Choice "B" is correct. Statement I is a correct statement. Virtual memory is memory where portions of a program that are not being executed are stored, but it is not real memory. It is actually a part of disk storage. When the part of the program that is being stored in virtual memory is to be executed, that part of the program is retrieved and stored in real memory. Statement III is a correct statement. RAID is disk storage where multiple inexpensive disk drives are combined into an array of disk drives to obtain performance, capacity, and reliability that exceed that of a single large disk drive. Statement II is an incorrect statement. Virtual memory is NOT real memory.