A bar of diameter 30 mm is subjected to a tensile load such that the measured extension on a gauge length of 200 mm is 0.09 mm and the change in diameter is 0.0045 mm. Calculate the Poisson Ratio:
1
\(\frac{1}{3}\)
2
\(\frac{1}{4}\)
3
\(\frac{1}{5}\)
4
\(\frac{1}{6}\)