What does the following MS-EXCEL formula do ?
= SUM (Sheet1 : Sheet4!D18)
1
It adds data from all D18 cells in sheet1, sheet2, sheet3 and sheet4
2
It adds data from cell D18 of sheet1 and cell D18 of Sheet4
3
It adds all data in the range A1 : D18 in sheet1, sheet2, sheet3 and sheet4
4
It adds data from cell A1 of Sheet1 and cell D18 of Sheet4