Six friends Arif, Altaf, Jagat, Karun, Nitin and Neha are sitting in a row facing north. Altaf, Jagat and Arif are sitting 2nd, 3rd and 4th from the left. Karun sits at the extreme end. Neha has to sit at the extreme end but she cannot sit at the extreme left end. At which place is Nitin sitting on the right?