You have a web part named Web1. Web1 modifies the content of a published Microsoft Office Excel workbook by using Excel web services. You need to open a new Excel Calculation Service session in Web1.

Which method should you use?

A.
ExcelService.Calculate()

B.
ExcelService.CalculateWorkbook()

C.
ExcelService.GetSessionInformation()

D.
ExcelService.OpenWorkbook()