[单选题]
A monochromatic beam of lighxnja4aef7zf6i .pa3u *( m7 vnt is incident yvzfou4l19xbp nnk ; xv;uqskt1v 18,2k w+ *gon a double slit arrangement where the slw t+1x18vg ,q*k 42b zlxupn1;k synokvv9uf;it 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. $4.5\times10^{−7}\,m$
