(Petrol : Car) , (Ink : Pen) , (Garbage : Dustbin) , (Lead : Pencil)
Option:
Justification: In all other pairs, first is required by the second for its functioning.

(Petrol : Car) , (Ink : Pen) , (Garbage : Dustbin) , (Lead : Pencil)
Justification: In all other pairs, first is required by the second for its functioning.