Which of the following is a potential consequence when using an external session management store over a server level store?

Which of the following is a potential consequence when using an external session management store over a server level store?
A . A server level store makes a smaller footprint.
B . Only half the current sessions can be saved externally.
C . External session management stores can use additional system resources.
D . Using an external session management store takes 10X as long to rebuild the session after a failure.

Answer: C