You are deploying a PHP App Engine Standard service with Cloud SQL as the backend. You want to minimize the number of queries to the database. What should you do? 

Answer options:

A. Set the memcache service level to dedicated. Create a key from the hash of the query, and return database values from memcache before issuing a query to Cloud SQL.
B. Set the memcache service level to dedicated. Create a cron task that runs every minute to populate the cache with keys containing query results.
C. Set the memcache service level to shared. Create a cron task that runs every minute to save all expected queries to a key called cached_queries.
D. Set the memcache service level to shared. Create a key called cached_queries, and return database values from the key before using a query to Cloud SQL.

A