[单选题]
A monochromatic beam of light is incident rsmt4;e5d*s* pesy jx .op4,hd2g(wgh80c p lck+q s8on a double slit arrangement where the slitpwh(cgsdqg k 8l2+ 8c0 separation 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. $4.5\times10^{−7}\,m$
