The resistance of a wire is \( \mathrm{R} \). After melting it is reshaped such that its area of...

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The resistance of a wire is \( \mathrm{R} \). After melting it is reshaped such that its area of cross section becomes \( \mathrm{n} \) times its initial area of cross section. It new resistance will be
a. \( \mathrm{nR} \)
b. \( \frac{\mathrm{R}}{\mathrm{n}} \)
c. \( n^{2} R \)
d. \( \frac{\mathrm{R}}{\mathrm{n}^{2}} \)
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