Which statement is correct in this scenario?

Following are the parameters set in your Oracle database instance:
USE_INDIRECT_DATA_BUFFERS=true
DB_BLOCK_SIZE=8192
DB_BLOCK_BUFFERS=1048576
SHARED_POOL_SIZE=2831155200
You executed the following command:
$ ls -al /dev/shm
total 120
drwxr-xr-x 1 oracle dba 0 Nov 20 16:29 .
drwxr-xr-x 22 root root 118784 Nov 20 16:25 .. –
rw-r—– 1 oracle dba 8589934592 Nov 20 16:30 ora_orcl_458754
Which statement is correct in this scenario?

A.
The SGA is available in the shared memory file system.

B.
The shared pool is available in the shared memory file system.

C.
The database buffer cache is available in the shared memory file system.

D.
Every oracle process can have virtual address space more than 4 GB.