4. What is the correct sequence of occurrence of the following cities in South-East Asia as one proceeds from south to north? 
1. Bangkok

2. Hanoi
3. Jakarta

4. Singapore
 

Select the correct answer using the code given below.

1. 4-2-1-3

2. 3-2-4-1

3. 3-4-1-2

4. 4-3-2-1

Correct Answer :

3-4-1-2