Which two statements about IGP and EGP routing protocols are true? (Choose two)

Which two statements about IGP and EGP routing protocols are true? (Choose two)
A . IGP routing protocols are used within internal networks.
B . Service providers use EGP and BGP for intra AS routing.
C . EGP routing protocols are used to connect multiple IGP networks.
D . Service providers use OSPF and IS-IS for intra AS routing.
E . OSPF, EIGRP and BGP are categorized as IGP routing protocols.

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Answer: A,B