Find the geometric mean of 5 numbers 2, 8, 16, 128, 512

Question

$\begin {array} {1 1} (A)\;2 & \quad (B)\;2^{\large\frac{24}{5}} \\ (C)\;2^{\large\frac{4}{5}} & \quad (D)\;None\: of \: these \end {array}$