Which of the following countries is/are NOT a member of the 'Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Co-operation (BIMSTEC)'?
1. Thailand
2. Nepal
3. Bhutan
4. Indonesia
Select the correct answer from the code given below:

1. A.Only 1
2. B.1 and 4
3. C.Only 4
4. D.2 and 3