In what major ways are bhutan and nepal different from sri lanka and maldives? in what major ways are they all similar?

Bhutan and Nepal on one side, and Sri Lanka and Maldives on the other side, have both some similarities and differences.

Similarities:

All of them belong in the South Asia region;They are all small nations;They have multiple ethnic and religious groups;All of them are poor countries, with less developed economies;

Differences:

Bhutan and Nepal are located in the northern part of the region, while Sri Lanka and Maldives are located in the southern part of the region;Bhutan and Nepal are mountainous countries with mountainous climate, while Sri Lanka and Maldives are mostly lowland countries with tropical climate;Bhutan and Nepal are continental countries, while Sri Lanka and Maldives are island countries;

The answer is a but it also might be 7 so