How should the corresponding configuration entry be formated?

An SELinux security context is required to ensure that all files in /opt have the default context of system_u:object_r:usr_t.
How should the corresponding configuration entry be formated?

A.
system_u:object_r:usr_t /opt/*

B.
/opt/.* system_u:object_r:usr_t

C.
/opt/* system_u:object_r:usr_t

D.
system_u:object_r:usr_t: /opt/.*

E.
system_u:object_r:usr_t /opt/.*