You have semi-synchronous replication configured and working with one slave. rpl_semi_sync_master_timeout has never been reached.
You find that the disk system on the master has failed and as a result, the data on the master is completely unrecoverable.
Which two statements are true?

AThe salve automatically identifies that the master is unreachable and performs any required actions so that applications can start using the slave as the new master.

BReads from the slave can return outdated data until the value of the rpl_semi_sync_master_timeout varibable is reached.

CAs soon as the incident happens, application can read data from the slave and rely on it to return a full and current set of data.

DReads from the slave can return outdated data for some time, until it applies all transactions from its relay log.

ENo committed transactions are lost.

FA small amount of committed transactions may be lost in case they were committed just before the disk failure.