A# showip route
< output ommited>
Gateway of last resort is not set
S    10.0.0.0/8 [1/0] via 172.16.40.2
64.0.0.0/16 is subnetted, 1 subnets 
C       64.100.0.0 is directly connected,SerialO/1/0 
C    128.107.0.0/16 is directly connected,loopback2
172.16.0.0/24 is subnetted, 1 subnets 
C       172.16.40.0 is directly connected, SerialO/0/0 
C    192.168.1.0/24 is directly connected, FastEthemetO/0/0 
S    192.168.2.0/24 [1/0] via 172.16.40.2 
C    198.133.219.0/24 is directly connected, LoopbackO
Refer to the exhibit. What two commands will change the next-hop address for the 10.0.0.0/8 network from 172.16.40.2 to 192.168.1.2? (Choose two.)
a. A(config)# no network 10.0.0.0 255.0.0.0 172.16.40.2 D
b. A(config)#no ip address 10.0.0.1 255.0.0.0 172.16.40.2 0 
c. A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2
d. A(config)# ip route 10.0.0.0 255.0.0.0 sO/O/O
e. A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2

i've answered c) and e)