Exam 300-101 Question id=516 Layer 3 Technologies

Refer to the exhibit.
q_139
R(config)#ip route 10.0.0.0 255.0.0.0 FastEthernet0/1 R(config)#ip route 0.0.0.0 0.0.0.0 FastEthernet0/0
Which option represents the minimal configuration that allows inbound traffic from the 172.16.1.0/24 network to successfully enter router R, while also limiting spoofed 10.0.0.0/8 hosts that could enter router R?

A. R(config)#ip cef R(config)#interface fa0/0 R(config-if)#ip verify unicast source reachable-via rx allow-default
B. R(config)#ip cef R(config)#interface fa0/0 R(config-if)#ip verify unicast source reachable-via rx
C. R(config)#no ip cef R(config)#interface fa0/0 R(config-if)#ip verify unicast source reachable-via rx
D. R(config)#interface fa0/0 R(config-if)#ip verify unicast source reachable-via any
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