A Sensitive Galvanometer Has a Resistance of 180 Ω and Requires

A sensitive galvanometer has a resistance of 180 Ω and requires 2.4 μA of current to produce a full-scale deflection. The shunt resistance needed to construct an ammeter that gives full-scale deflection for a current of 1.0 mA is approximately

A) 4.5 Ω.
B) 0.43 Ω.
C) 0.22 Ω.
D) 0.86 Ω.
E) 1.72 Ω.