How can you change the polling interval of dm_agent_exec?

A.
by changing the value of database_refresh_interval in agent.ini

B.
by changing the value override_sleep_duration in agent.ini

C.
by adding an override_sleep_duration argument to the command line in the method verb of the
agent_exec_method

D.
by adding a database_refresh_interval argument to the command line in the method verb of the
agent_exec_method