A resistance-meter has five measurement range-settings between 200 $\Omega$ and 2 M$\Omega$ in multiples of 10. The meter measures resistance of a device by measuring a full-range voltage of 2 V across the device by passing an appropriate constant current for each range-setting. If a device having a resistance value in the range 8 k$\Omega$ to 12k$\Omega$ and a maximum power rating of 100 $\mu$ W is to be measured safely with this meter, the choice for range-setting on the meter for best resolution in measurement, in k$\Omega$, is
- 2
- 20
- 200
- 2000