You have an Azure subscription containing an Azure Blob Storage account named storage1 and an Azure Synapse Analytics dedicated SQL pool named Pool1.
You need to store data in storage1 that will be read by Pool1. The solution must meet the following requirements:

• Enable Pool1 to skip columns and rows that are unnecessary in a query.
• Automatically create column statistics.
• Minimize the size of files.

Which type of file should you use?