If an electron in a hydrogen atom jumps from the `3rd` orbit to the `2nd` orbit, it emits a photon of wavelength `lambda`. When it jumps form the `4th` orbit to the `3dr` orbit, the corresponding wavelength of the photon will be
A. `(16)/(25)lambda`
B. `(9)/(16)lambda`
C. `(20)/(7)lambda`
D. `(20)/(13)lambda`