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.

Cities by latitude from south to north:

• 3. Jakarta — Located in Indonesia, around 6° South. Southernmost among the four. Verdict: first.
• 4. Singapore — Near the Equator, around 1° North. Lies north of Jakarta but south of Bangkok and Hanoi. Verdict: second.
• 1. Bangkok — In Thailand, around 13° North. Lies north of Singapore but south of Hanoi. Verdict: third.
• 2. Hanoi — In Vietnam, around 21° North. Northernmost among the four. Verdict: fourth.

So the correct south-to-north sequence is 3-4-1-2, hence (c).