What must you do to receive recommendations about the efficient use of indexes and materialized views to improve query performance?

Your database supports a DSS workload that involves the execution of complex queries:
Currently, the library cache contains the ideal workload for analysis. You want to analyze
some of the queries for an application that are cached in the library cache. What must you
do to receive recommendations about the efficient use of indexes and materialized views to
improve query performance?

A.
Create a SQL Tuning Set (STS) that contains the queries cached in the library cache and
run the SQL Tuning Advisor (STA) on the workload captured in the STS.

B.
Run the Automatic Workload Repository Monitor (ADDM).

C.
Create an STS that contains the queries cached in the library cache and run the SQL
Performance Analyzer (SPA) on the workload captured in the STS.

D.
Create an STS that contains the queries cached in the library cache and run the SQL
Access Advisor on the workload captured in the STS.