Consider the following places:
1. Shimla
2. Gangtok
3. Mumbai
4. Delhi
Arrange these places in decreasing order of their atmospheric pressure on their ground surface using the codes given below:
(a) 3, 4, 1, 2
(b) 4, 3, 2, 1
(c) 3, 1, 4, 2
(d) 2, 4, 1, 3