Which of the following should be used when building a high-end graphics workstation for CAD applications?

Which of the following should be used when building a high-end graphics workstation for CAD applications? (Select TWO).
A. Main memory of 8 GB or more
B. PCI-e video card with large amount of memory
C. More than 4 accessible USB 2.0 ports
D. A 32-bit OS to handle the large amount of expected disk I/O
E. An eSATA external drive

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