Which two actions describe LSP delegation to PCE servers?

Which two actions describe LSP delegation to PCE servers? (Choose two.)
A. removing TE re-optimization timer timeouts
B. changing the precedence of any of the PCE servers
C. entering the mpls traffic-eng reoptimize command
D. adding a new PCE server with lower precedence than the primary PCE
E. adding a new PCE server with higher precedence than the primary PCE