Which of the following is an advantage of enabling label stack reduction for a CSPF-calculated...

The number of hops included in the end-to-end path is reduced.

The path calculation can be delegated to an external path computation element (PCE).

There is a larger list of traffic-engineering constraint types that can be imposed on the LSP path.

The routers in the calculated path can take advantage of ECMP to better distribute the traffic load.