The refractive indices of water and diamond are respectively 1.33 and 2.4 . Find the velocity of light in diamond. The velocity of light in water is \( 2.28 \times 10^{8} \mathrm{~ms}^{-1} \) .

A \( 1.16 \times 10^{8} \mathrm{~ms}^{-1} \)

B \( 1.26 \times 10^{8} \mathrm{~ms}^{-1} \)

C \( 1.36 \times 10^{8} \mathrm{~ms}^{-1} \)