You are planning the deployment of a SQL Azure database.  Your company has a Volume Licensing Agreement for Microsoft SQL Server 2008. The SQL Azure database must maintain a monthly availability of 99.9%.   You need to recommend an approach for minimizing the monthly expenses associated with the SQL Azure database.  What should you recommend？（）

• A、 Add a processor license to the existing SQL Server licensing agreement.
• B、 Purchase a Windows Azure consumption platform subscription.
• C、 Purchase a SQL Server Services Provider Licensing Agreement （SPLA）.
• D、 Purchase a SQL Server Web license to extend the existing SQL Server licensing agreement.