What is the correct formula to determine the flow rate of fluid to be infused in drops per minute?
1
\((\frac{\text{Total volume}}{\text{Time in minute}}) \times \text{Drop factor} = \text{drop per hour})\)
2
\((\frac{\text{Total volume} \times \text{Drop factor}}{\text{Time in minute}} = \text{drop per min})\)
3
\( (\frac{\text{Total volume} \times \text{Time in minute}}{\text{Drop factor}} = \text{drop per min})\)
4
\((\frac{\text{Time in minute} \times \text{Drop factor}}{\text{Total volume}} = \text{drop per min})\)