Which one of the following is the correct sequence of the given towns of Pakistan while moving from the North towards the South?

1. (a)Islamabad - Gujrawala - Peshawar - Multan
2. (b)Peshawar - Gujrawala - Multan - Islamabad
3. (c)Peshawar - Islamabad - Gujrawala - Multan
4. (d)Islamabad - Multan - Peshawar - Gujrawala