【单选题】
You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used. <br /> Which method would you follow to achieve this？（） 
A、enable index monitoring and query the DBA_OBJECTS view
B、enable index monitoring and query the DBA_INDEXES view
C、enable index monitoring and query the V$OBJECT_USAGE view
D、enable index monitoring and view the DBA_INDEXTYPE_COMMENTS view
查看正确答案
