Two wires are made up of silver. Both wires are 2m long, but wire A is 2mm thick and wire B is 4mm thick. The resistivity is

Question

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