Which configuration is required on the Router B fastethernet 0/0 port in order to allow the DHCP client to successfully receive an IP address from the DHCP server?

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ccnp-route-dump
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#1

Refer to the exhibit. The DHCP client is unable to receive a DHCP address from the DHCP server. Consider
the following output:

hostname RouterB
!
interface fastethernet 0/0
ip address 172.31.1.1 255.255.255.0
interface serial 0/0
ip address 10.1.1.1 255.255.255.252
!
ip route 172.16.1.0 255.255.255.0 10.1.1.2

Which configuration is required on the Router B fastethernet 0/0 port in order to allow the DHCP client to
successfully receive an IP address from the DHCP server?
ccnp38
A. RouterB(config-if)# ip helper-address 172.16.1.2
B. RouterB(config-if)# ip helper-address 172.16.1.1
C. RouterB(config-if)# ip helper-address 172.31.1.1
D. RouterB(config-if)# ip helper-address 255.255.255.255

Correct Answer: A