The diagram represents a circuit containing a cell with internal resistance. At first, the switch is open. Which row gives the changes in currents $I_1$ and $I_2$ when the switch is closed?
- A$I_1$ decreases, $I_2$ decreases
- B$I_1$ decreases, $I_2$ stays the same
- C$I_1$ increases, $I_2$ decreases
- D$I_1$ increases, $I_2$ stays the same