Calculate wave number of yellow radiations having wavelength of $5800\; A_0$ .

Question

$\begin{array}{1 1} (a)\; 1.72 \times 10^{6} m {-1} \\ (b)\; 1.12 \times 10^{6} m {-1} \\ (c) \; 2.72 \times 10^6 m ^{-1} \\ (d)\; 1.62 \times 10^6 m ^{-1} \end{array}$