The offline path statuses are as follows:
Offline(C)
The status in which I/O cannot be issued because the offline operation was executed. For details on the offline operation, see offline (places paths offline).
The (C) indicates the command attribute, which indicates that the path was placed offline by using the command.
Offline(E)
The status indicating that an I/O could not be issued on a given path, because an error occurred on the path.
The (E) means error.