What is the correct definition of the persistent state of a packaged variable?

A.
It is a private variable defined in a procedure or function within a package body whose value is
consistent within a user session.

B.
It is a public variable in a package specification whose value is consistent within a user session.

C.
It is a private variable in a package body whose value is consistent across all current active
sessions.

D.
It is a public variable in a package specification whose value is always consistent across all
current active sessions.

Explanation: