Which EIGRP packet statement is true?

Which EIGRP packet statement is true?

A.
On high-speed links, hello packets are broadcast every 5 seconds for neighbor discovery.

B.
On low-speed links, hello packets are broadcast every 15 seconds for neighbor discovery.

C.
Reply packets are multicast to IP address 224.0.0.10 using RTP.

D.
Update packets route reliable change information only to the affected routers.

E.
Reply packets are used to send routing updates.

Explanation:
Reference:
http://docwiki.cisco.com/wiki/Enhanced_Interior_Gateway_Routing_Protocol#EIGRP_Packet_Typ
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