Two wires of equal lengths , One of aluminium and the other of copper have the same resistance . Which of the two wires is lighter. $[\rho_A =2.63 \times 10^{-8} \Omega m, \rho_{cn}= 1.72 \times 10^{-8} \Omega -m$. Relative density of $Al =2.7$ , Relative density of $Cu= 8.9 ]$

Question

$\begin{array}{1 1} \text{Aluminium wires are 2.16 times heavier than copper wire} \\ \text{Copper wires are 2.16 times heavier than aluminium}\\ \text{Aluminium wires are of same mass as that copper wire } \\ \text{Cannot be determined} \end{array}$