What advantage is offered by the null-point method in a Wheatstone bridge? What additional measurements are necessary to determine R unknown using an alternative method?

Options

1. AIt eliminates the need for precise measurement of galvanometer resistance.
2. BIt provides a more accurate calculation of R unknown compared to other methods.
3. CIt simplifies the determination of currents in resistances and the galvanometer.
4. DIt requires the measurement of all currents in resistances and the galvanometer, including the internal resist