You must route both IPv4 and IPv6 packets in your environment.
Which configuration should you add at the [edit protocols] level to allow you to accomplish this objective?

A.
ospf {
area 0.0.0.0 {
interface all;
}
}

B.
ospf {
area 0.0.0.0 {
interface all;
family inet6;
}
}

C.
ospf3 {
area 0.0.0.0 {
interface all;
}
}

D.
ospf3 {
area 0.0.0.0 {
interface all;
allow ipv4;
}
}

Explanation:
JUNOS protocol families include the following common protocol suites:
InetSupports IP protocol traffic, including Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), and Internet Control Message Protocol (ICMP).
Inet6Supports IPv6 protocol traffic, including Routing Information Protocol for IPv6 (RIPng), Intermediate System-to-Intermediate System (IS-IS), and BGP.
ISOSupports IS-IS traffic.
MPLSSupports Multiprotocol Label Switching (MPLS).