You have a Visual Studio Team Foundation Server 2010 environment. You are unable to update your work items by using data stored in a Microsoft Office Excel 2007 worksheet that has been created from a work item query within a team project. You need to ensure that Excel can connect to the Team Foundation Server environment.
What should you do?

A.
Upgrade to Microsoft Office 2010.

B.
Install Visual Studio Team Explorer 2010.

C.
In Excel 2007, from the Developer tab of the ribbon, modify the properties of the worksheet controls.

D.
In Excel 2007, from the Add-Ins page of the Excel Options dialog box, open the Excel Add-Ins dialog box and add the Team Foundation add-in.