An observer moves towards a stationary source of sound with a speed `((1)/(5))`th of the speed of sound. The wavelength and frequency of the source emitted are `lamda` and f, respectively. The apparent frequency and wavelength recorded by the observer are, respectively.

Options

A. `1.2f` and `lambda`
B. f and `1.2 lambda`
C. 0.8 f` and `0.8 lambda`
D. `1.2 f` and `1.2 lambda`

Answer

A