Which approach should you recommend?

You are designing a SharePoint 2010 Internet site for e-commerce. The site shows pricing information retrieved
from a Microsoft SQL Server database for the deals featured each day on the home page. You need to cache the
pricing data for each featured deal on the server and refresh the data with a minimum amount of network traffic.
Which approach should you recommend?

A.
Use LINQ to SharePoint from a query of the database server for the pricing data.

B.
Use AJAX code on the client from the database server.

C.
Use the server session state to cache the data.

D.
Cache the data and use a lock to control the refresh of the cache data.