Which configuration shows the correct application of a security policy scheduler?

Which configuration shows the correct application of a security policy scheduler?

A.
[edit security policies from-zone Private to-zone External] user@host# show
policy allowTransit {
match {
source-address PrivateHosts;
destination-address ExtServers;
application ExtApps;
}
then {
permit {
tunnel {
ipsec-vpn myTunnel;
}
scheduler-name now;
}
}
}

B.
[edit security policies from-zone Private to-zone External] user@host# show
policy allowTransit {
match {
source-address PrivateHosts;
destination-address ExtServers;
application ExtApps;
}
then {
permit {
tunnel {
ipsec-vpn myTunnel;
}
}
}
scheduler-name now;
}

C.
[edit security policies from-zone Private to-zone External] user@host# show
policy allowTransit {
match {
source-address PrivateHosts;
destination-address ExtServers;
application ExtApps;
}
then {
permit {
tunnel {
ipsec-vpn myTunnel;
scheduler-name now;
}
}
}
}

D.
[edit security policies from-zone Private to-zone External] user@host# show
policy allowTransit {
match {
source-address PrivateHosts;
destination-address ExtServers;
application ExtApps;
scheduler-name now;
}
then {
permit {
tunnel {
ipsec-vpn myTunnel;
}
}
}
scheduler-name now;
}