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