Refer to the spreadsheet below:

What formula should be used to determine the Flow Into Node value in cell E$6($to be copied to E$7$:E$19)$ in the spreadsheet above?

$A6**D6$

D$6*$E$6$

$A{6}^{**}E6$

IF $)>(0,D{6}^{**}E6,A{6}^{**}D6$

None of the above