In a double slit experiment ,the separation between the slits is `d=0.25cm` and the distance of the screen `D=100`cm from the slits .if the wavelength of light used in `lambda=6000Å`and `I_(0)`is the intensity of the central bright fringe.the intensity at a distance `x=4xx10^(-5)`in form the central maximum is-
A. `I_(0)`
B. `I_(0)//2`
C. `3I_(0)//4`
D. `I_(0)//3`