Which EIGRP packet statement is true?

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

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

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

D.
Reply packets are used to send routing updates.

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