The correct option is
D Gaurav
Given that the names of brothers and sisters do not begin with the same letter.Pinku and Gaurav are not Saroj or Sangeeta's brothers, Pinku cannot be the brother of Pooja, hence he is the brother of Rakhi.
Now, we have that Gaurav cannot be the brother of Saroj, Sangeeta or Rakhi. Therefore, Gaurav is the brother of Pooja.
Given that Saroj is not Ratan's sister and Rakhi and Pooja cannot be the sister's of Ratan (From above conclusions), Ratan is the brother of Sangeeta.
Anil will have to be the brother of Saroj as this is the only valid combination left. Therefore, we have this table finally. Brother | Sister |
Pinku | Rakhi |
Gaurav | Pooja |
Ratan | Sangeeta |
Anil | Saroj |
Hence, option D is correct.