Which design consideration is valid when you contrast fabricPath and trill?

Which design consideration is valid when you contrast fabricPath and trill?
A . FabricPath uses IS-IS, but TRILL uses VxLAN
B. FabricPath permits active-active FHRP and TRILL support anycast gateway.
C. FabricPath Permits ECMP, but TRILL does not
D. FabricPath permits active-active mode, but TRILL supports only active-standby mode.

Answer: B