A Galvanometer coil has a resistance of 15 Ω and gives full scale deflection for a current of 4 mA. To convert it to an ammeter of range 0 to 6 Amp _________
(a) 10m Ω resistance is to be connected in parallel to the galvanometer.
(b) 10m Ω resistance is to be connected in series with the galvanometer.
(c) 0.1 Ω resistance is to be connected in parallel to the galvanometer.
(d) 0.1 Ω resistance is to be connected in series with the galvanometer.