Which configuration example accomplishes this?

You want to configure per-flow load balancing for all routes on Router-1. Which configuration
example accomplishes this?

A.
routing-options {
forwarding-table {
export ECMP;
}
}
policy-options {
policy-statement ECMP {
term first {
then {
load-balance per-packet;
}
}
}
}

B.
routing-options {
export ECMP;
}
policy-options {
policy-statement ECMP {
term first {
then {
load-balance per-packet;
}
}
}
}

C.
routing-options {
forwarding-table {
export ECMP;
}
}
policy-options {
policy-statement ECMP {
term first {
from protocol ospf;
then {
load-balance per-packet;
}
}
}
}

D.
routing-options {
forwarding-table {
export ECMP;
}
}
policy-options {
policy-statement ECMP {
term first {
from protocol ospf;
then {
load-balance ECMP;
}
}
}

Explanation: