$($d$)$ Positions of $J$ and $W$ are interchangeable.

Directions for questions $5$ to $9$: Read the following passage and solve the questions based on it$.$

Five students$-$Pankaj, Jatin, Robin, Dinkar and Rahul went for the Group Discussion $($GD$)$ and the $($Personal Interview$)($PI$).$ The panel judged these five students and gave them rankings for the GD and the PI in a descending order. Rahul, who was ranked first in the GD$,$ was last in the PI$.$ Robin had the same ranking in both and was just above Rahul in the PI$.$ In the GD$,$ Pankaj was just above Dinkar but in the PI he was in the middle, after Jatin.

Q$.5$ Who ranked first in the PI$?$

$($a$)$ Jatin

$($b$)$ Rahul

$($c$)$ Robin

$($d$)$ None of these