What should you recommend?

You are designing a Windows Azure application that will use Windows Azure Table storage.
You need to recommend an approach for minimizing storage costs.
What should you recommend?

A.
Use Entity Group Transactions.

B.
Use multiple partitions to store data.

C.
Use a transaction scope to group all storage operations.

D.
Use Microsoft Distributed Transaction Coordinator (MSDTC).

Explanation:
The Table service supports batch transactions on entities that are in the same table and belong to the same partition group. Multiple Insert Entity, Update Entity, Merge Entity, Delete Entity, Insert Or Replace Entity, and Insert Or Merge Entity operations are supported within a single transaction.
You can perform entity group transactions either via REST or by using the .NET Client Library for WCF Data Services.

Minimize the cost of storage by storing the large files in Windows Azure Table Storage versus SQL Azure (though BLOB storage is preferred for files)

The Microsoft Distributed Transaction Coordinator (MS DTC) is a transaction manager that allows client applications to include several different sources of data in one transaction. MS DTC coordinates committing the distributed transaction across all the servers enlisted in the transaction.