What can be automatically implemented after the SQL Tuning Advisor is run as part of the Automated Maintenance Task? 

Answer options:

A. statistics recommendations
B. SQL profile recommendations
C. SQL statement restructure recommendations
D. creation of materialized views to improve query performance

C

Reference: http://docs.oracle.com/cd/E11882_01/server.112/e16638/sql_tune.htm#PFGRF028