Change into positive degree: 'Dhaka is one of the most crowded cities in Bangladesh.'

1. ক
   No other city is as crowded as Dhaka.
   
2. খ
   Very few cities in Bangladesh are as crowded as Dhaka.
   
3. গ
   Dhaka is more crowded than any other city.
   
4. ঘ
   Most cities are as crowded as Dhaka.