What are three advantages which dynamic routing protocols offer over static routing protocols? (Choose three.)

A.
lower administrative overhead

B.
increased network availability

C.
greater network scalability

D.
easier to implement qualified next hops

E.
easier ECMP route implementation

Explanation:
Dynamic routing protocols help the network administrator manage the time-consuming and exacting process of
configuring and maintaining static routes.
Dynamic routing automatically adapts topology to reroute traffic if possible.
Dynamic routing is generally independent of the network size.
http://www.ciscopress.com/articles/article.asp?p=2180210&seqNum=5