Three wires A, B and C of the same material have lengths and area of cross-sections as (2 l, A/2),(l, A ) and (l/2, 2 A ), respectively. If the…

Three wires A, B and C of the same material have lengths and area of cross-sections as $\displaystyle \left(2 l, \frac{\mathrm{~A}}{2}\right),(l, \mathrm{~A})$ and $\displaystyle \left(\frac{l}{2}, 2 \mathrm{~A}\right)$, respectively. If the resistances of these wires are $\displaystyle \mathrm{R}_{\mathrm{A}}, \mathrm{R}_{\mathrm{B}}$ and $\displaystyle \mathrm{R}_{\mathrm{C}}$ respectively, then :