Which of the following is a valid method for removing the route?

The administrator has added a specific route for 192.168.3.0/24 to the routing table as shown below:

Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.3.0 192.168.1.243 255.255.255.0 UG 0 0 0 eth0 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth
0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0

Which of the following is a valid method for removing the route?

A.
route del -net 192.168.3.0 netmask 255.255.255.0 gw 192.168.1.243

B.
edit /proc/net/netstat

C.
route remove -net 192.168.3.0 netmask 255.255.255.0 gw 192.168.1.1

D.
route remove 192.168.3.0 255.255.255.0