Maximum intensity of the interference pattern in a young double slit experiment is I. Distance between slit is $d= 5 \lambda$ where $\lambda$ is wave length of the light source. What will be the intensity of light at a point directly in front of one of the slits. $(D= 50 \lambda)$

Question

$(a)\;\frac{I}{2} \\ (b)\;\frac{I}{3} \\ (c)\;\frac{3I}{2} \\ (d)\;\frac{I}{4}$