which of the following is true?

To run GAiA in 64bit mode, which of the following is true?
1) Run set edition default 64-bit.
2) Install more than 4 GB RAM.
3) Install more than 4 TB of Hard Disk.

A.
1 and 3

B.
1 and 2

C.
2 and 3

D.
1, 2, and 3