For traffic moving at 60 km/hr along a circular track of radius 0⋅1 km, the correct angle of banking is

• A

  ${\tan }^{−1}⁡\left(\frac{{60}^2}{0⋠1}\right)$

• B

  ${\tan }^{−1}⁡\left[\frac{{(50/3)}^2}{100×9⋠8}\right]$

• C

  ${\tan }^{−1}⁡(60×0⋠1×9⋠8{)}^{1/2}$

• D

  ${\tan }^{−1}⁡\left[\frac{100×9⋠8}{(50/3{)}^2}\right]$