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A voltmeter of variable ranges 3V, 15V, ...

A voltmeter of variable ranges 3V, 15V, 150 V is to designed by connecting resistances `R_(1), R_(2), R_(3)` in series with a galvanometer of resistance `G=20Omega`, as shown in the figure. The galvanometer gives full pass through its coil. Then, the resistances `R_(1), R_(2) and R_(3)` (in kilo ohms) should be, respectively

A

3, 12, 135

B

2.98, 12, 135

C

2.98, 14.98, 149.98

D

3.86, 12.55, 122.97

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The correct Answer is:
B
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