Consider a circuit with a constant current source of  $I_S=2mA$   with a capacitor of  $2\mu F$ and resistor of $5k\Omega$  (as shown in figure). At $t=0$  the switch is closed. $I_C$  and $I_R$  denotes current in the capacitor and resistor branch respectively and  $V_C$  represents potential difference across the capacitor. Choose the correct graph(s).