The value of Planck's constant is $6.63 \times 10^{–34}Js$. The velocity of light is $3.0 \times 10^8 ms^{–1}$. Which value is closest to the wavelength in nanometers of a quantum of light with frequency of $8 \times 10^{15} s^{–1}$ :

Question

( A ) $3 \times 10^{7}$
( B ) $4 \times 10^{1}$
( C ) $5 \times 10^{–18}$
( D ) $2 \times 10^{–25}$