which of the following?

A file with permission set to octet 540 allows which of the following?

A.
Read and write permissions to the owner, and read-only permission to the group. No permission to others.

B.
Read and write permissions to root, and read-only permission to the group. No permission to others.

C.
Read and execute permissions to the owner, and read-only permission to the group. No permission to others.

D.
Read and execute permissions to root, and read-only permission to the group. No permission to others.