What is the correct command to configure default route?

A.
set route 0.0.0.0/0 vrouter untrust

B.
set route 255.255.255.255/255 int e8 gate 0.0.0.0

C.
set route 0.0.0.0/0 interface e8 gateway 143.45.56.254

D.
set route 0.0.0.0/0 interface e8 next-hop 143.45.56.254

E.
set route 0.0.0.0/0 interface 143.45.56.1 gate 143.45.56.254

Explanation:
A default route is also known as the route of last resort. So if a packet on a device needs to get to a location and no other routes on the device are able to identify the next gateway for it to go to, it will use the default gateway.
To add a static route using the CLI, enter the
command : set route ipaddress/netmask interface
interfacename gateway gatewayip, where ipaddress is the virtual router’s IP address, netmask is the cirtual router’s netmask, interfacename is the next hop
gateway, and gateway ip is the IP address of the next hop gateway.
In this scenario the full command would be : set route 0.0.0.0/0 interface e8 gateway 143.45.56.254