[单选题]
A monochromatic beam of li- 28k0 liyap- au8cnqsght is incidyn(4w (5. sj n a3ay1lm/joarbent on a double slit arrangement where the slit separation awn3jl b/( on 5r1sm.(ayjy4a is $9.0\times10^{−5}\,m$ and the slit-screen distance is 1.0m. The graph below shows the relative intensity of the light reaching the screen with respect to the distance from the central point of the pattern.
What is the wavelength of the light?
A. $9.0\times10^{−7}\,m$
B. $3.0\times10^{−7}\,m$
C. $4.5\times10^{−5}\,m$
D. $4.5\times10^{−7}\,m$
