Explanation :
Charles Kuen Kao is known as the father of fiber optics. Fiber Optics is the branch of science which is associated with the transmission of information as light pulses as information.
Charles Kuen Kao is mostly influenced by the work of Christian Doppler. Christian Doppler is known for Doppler's effect.
According to Doppler's effect "the frequency of wave depends on the relative speed of source and observer".
Hence, option (B) is correct.
