Which three statements about the route preference of IS-IS are true? (Choose three.)

[answerhappygod]

Which three statements about the route preference of IS-IS are true? (Choose three.)

A. An L1 path is preferred over an L2 path.
B. An L2 path is preferred over an L1 path.
C. Within each level, a path that supports optional metrics is preferred over a path that supports only the default metric.
D. Within each level of metric support, the path with the lowest metric is preferred.
E. The Cisco IS-IS implementation usually performs equal cost path load balancing on up to eight paths.
F. Both L1 and L2 routes will be installed in the routing table at the same time.