If $\lambda_{\gamma} \lambda_{\mathrm{x}}$ and $\lambda_{\mathrm{m}}$ are the wave lengths of the $\gamma$ -rays, $\mathrm{x}$ rays and micro waves respectively in space then
(A) $\lambda_{\gamma}>\lambda_{\mathrm{x}}>\lambda_{\mathrm{m}}$
(B) $\lambda_{\gamma}<\lambda_{\mathrm{x}}<\lambda_{\mathrm{m}}$
(C) $\lambda_{r}=\lambda_{x}=\lambda_{m}$
(D) $\lambda_{\gamma}<\lambda_{\mathrm{m}}<\lambda_{\mathrm{x}}$