Which of the Following Is Not a Windows Azure Primary

Which of the following is not a Windows Azure primary storage service:

A) BLOB (Binary Large OBject) ,which stores arbitrary binary data,such as images,audio and video.
B) Table,which stores unstructured data (known as entities) that does not require complex manipulations like those that can be performed on data in a SQL database.
C) Record,which stores key-value pairs.
D) SQL Database,which stores structured relational database data.