You administer an Azure Storage account with a blob container. You enable Storage account
logging for read, write and delete requests. You need to reduce the costs associated with storing
the logs. What should you do?

A.
Execute Delete Blob requests over https

B.
Create an export job for your container

C.
Set up a retention policy

D.
Execute Delete Blob requests over http

Explanation:
To ease the management of your logs, we have provided the functionality of retention policy which
will automatically cleanup `old’ logs without you being charged for the cleanup. It is recommended
that you set a retention policy for logs such that your analytics data will be within the 20TB limit
allowed for analytics data (logs and metrics combined).
http://blogs.msdn.com/b/windowsazurestorage/archive/2011/08/03/windows-azure-storagelogging-using-logs-to-track-storage-requests.aspx