The value of Planck's constant is $6.63 \times 10^{-34} \, J \cdot s$ and the speed of light is $3.0 \times 10^8 \, m \cdot s^{-1}$. The wavelength of a quantum of light with a frequency of $8 \times 10^{15} \, s^{-1}$ is closest to which of the following values in meters?
- A$3 \times 10^7$
- B$2 \times 10^{-25}$
- C$5 \times 10^{-18}$
- D$3.75 \times 10^{-8}$
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