Two wires A and B are made of copper. Both wires are 1m long but wire A is 1mm thick and wire B is 2 mm thick. The resistivity is

Question

$\begin{array}{1 1} (a)\; \text{more for A} \\ (b)\; \text{more for B} \\ (c)\; \text{same for both A and B} \\ (d)\; \text{cannot be compared} \end{array}$