When a potential difference is applied across a piece of wire made of metal A$,$ a current flows. If the metal$-$A wire is replaced with a wire made of metal B having twice the diameter of the metal$-$A wire, how much current will flow through the metal$-$B wire? The lengths of both wires are the same, and the voltage difference remains unchanged. The resistivity of metal A is $1\mathrm{.}6810-8$ m$,$ and the resistivity of metal B is $1\mathrm{.}5910-8$ m$.$

Question $26$ options:

A$)$

$19$ mA

B$)$

$5\mathrm{.}3$ mA

C$)$

$21$ mA

D$)$

$11$ mA