Two resistors, $R_1$ and $R_2$, are joined in series in a circuit, as shown. The current through the resistors is $I_0$. A further resistor, $R_3$, is then joined in parallel with $R_2$, as shown. How do the currents $I_1$ and $I_2$ in the resistors $R_1$ and $R_2$ compare with current $I_0$?
- Acurrent in $R_1$: $I_1 = I_0$; current in $R_2$: $I_2 < I_0$
- Bcurrent in $R_1$: $I_1 = I_0$; current in $R_2$: $I_2 = I_0$
- Ccurrent in $R_1$: $I_1 > I_0$; current in $R_2$: $I_2 = I_0$
- Dcurrent in $R_1$: $I_1 > I_0$; current in $R_2$: $I_2 < I_0$