V$ARCHIVED_LOG: New. from Oracle version8.
This view displays archived log information from the control file including archive log names. An archive log record is inserted after the online redo log is successfully archived or cleared (name column is NULL if the log was cleared). If the log is archived twice, there will be two archived log records with the same THREAD#, SEQUENCE#, and FIRST_CHANGE#, but with a different name. An archive log record is also inserted when an archive log is restored from a backup set or a copy and whenever a copy of a log is made with the RMAN copy command.
V$LOG_HISTORY: This view keeps record of the range of SCN in each archived redo log file.
Niether of the answer is true.
a. It doesn't contain any information about the current redo log. For current redo log look into V$LOG.
b. It doesn't show which archived redo log has been backed up instead it shows which online redo log has been archived.