Which two events will cause a slave server to create a new relay log file?

Which two events will cause a slave server to create a new relay log file?

A.
Execution of the FLUSH LOGS statement

B.
Starting of the SQL thread

C.
Reaching the slave_pendign _jobs_size_max limit

D.
Execution of FULSH TABLES WITH READ LOCK

E.
Starting of the I/O thread