You need to enable the "local-router" serial 0/0 connection to the "remote-router" to be authenticated using the "C!sco!

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You need to enable the "local-router" serial 0/0 connection to the "remote-router" to be authenticated using the "C!sco!23" password. The password cannot be sent in cleartext between the two routers. The "remote-router" has already been configured with all the required configurations. Which four Cisco IOS configurations are necessary? (Choose four.)

A. hostname local-router
B. int s0/0encap hdlc
C. int s0/0encap ppp
D. int s0/0ppp authentication pap
E. int s0/0ppp authentication chap
F. ip domain-name test.com
G. username remote-router password C!sco!23
H. username local-router password C!sco!23