A teacher in his physics laboratory allotted an experiment  to determine the resistance (G) of a galvanometer. Student took the observations for $\frac{1}{3}$ deflection in the galvanometer. Which of the below is true for measuring value of G?

$\frac{1}{3}$ deflection method cannot be used for determining the resistance of the galvanometer.

$\frac{1}{3}$ deflection method can be used and in this case the G equals to twice the value of shunt resistance(s).

$\frac{1}{3}$ deflection method can be used and in this case, the G equals to three times the value of shunt resistance(s)

$\frac{1}{3}$ deflection method can be used and in this case the G value equals to the shunt resistance(s).