A galvanometer coil has a resistance 90Ω and full scale deflection current 10 mA. A 910Ω resistance is connected in series with the galvanometer to make a voltmeter. If the least count of the voltmeter is 0.1 V, the number of divisions on its scale is
(a) 90
(b) 91
(c) 100
(d) None
(a) 90
(b) 91
(c) 100
(d) None