What is the optimize timer on an RSVP-signaled Label-Switched Path (LSP)?（）

• A、The time it takes to identify the optimal path for the LSP.
• B、The interval at which the ingress router recalculates the LSP's path.
• C、The time the ingress router takes to establish the primary path.
• D、The maximum number of times the ingress router tries to establish the primary path.