Pointing to a photograph, Rajat said, "He is the son of the only daughter of my mother-in-law." How is the person in photograph related to Rajat?

Rajat said, "He is the son of the only daughter of my mother-in-law."

From the given information relationship diagram will be​

So, the person in the photograph is Rajat's son.

Thus, the correct option is: (d) Son​​