The value of Planck's constant is $$6.63 \times 10^{-34}$$ Js .The speed of the light is $$43 \times 10^{17} nm s^{-1}$$. Which value is closest to the wavelength in nanometer of a quantum light with frequency of $$6 \times 10^{15}s s^{-1}$$?

A

75

B

10

C

25

D

50