Wires X and Y are both made from the same metal. The diameter of wire Y is 2 times the diameter of wire X. Wire X, wire Y and a battery are joined in series. What is the ratio $\dfrac{\text{average drift speed of free electrons in wire X}}{\text{average drift speed of free electrons in wire Y}}$?
- A$\frac{1}{4}$
- B$\frac{1}{2}$
- C$\frac{2}{1}$
- D$\frac{4}{1}$