Which one of the following shows the correct sequence of occurrence of four towns/ cities as one proceeds from west to east?
1. Ajmer, Darbhanga, Kohima, Silchar
2. Surat, Wardha, Rourkela, Bharuch
3. Pandharpur, Gulbarga, Kottagudam, Vishakhapatnam
4. Anand, Rajkot, Dhanbad, Aizawl