EIGRP feature DUAL$($Diffusing Update Algorithm$)$ descriptions are as follow: $($Choose all that apply$)$

a$.$ provides delivery of EIGRP packets to neighbors

b$.$ establishes relationships with directly connected EIGRP routers

c$.$ Guarantees loop$-$free and backup paths throughout the routing domain

d$.$ are uses to the status of its neighbors

e$.$ uses DUAL as its routing algorithm