A Galvanometer has a resistance G and 9 current `I_G` flowing in it produces full scale deflection. S
1 is the value of the shunt which converts it into an ammeter of range 0 to I and S
2 is the value of the shunt for the range 0 to 2I. The ratio `S_1/ S_2` is ................
Options:
(a) `(2I-I_G)/(I-I_G)`
(b) `1/2(I-I_G)/(2I-I_G)`
(c) 2
(d) 1