Recently e-retrofitment is in news, it has various applications in which of the following:
1. Transportation
2. Buildings
3. Industrial Processes
4. Power Generation
Select the correct answer using the code given below:
1
1 and 2 only
2
2, 3 and 4 only
3
1, 3 and 4 only
4
1, 2, 3 and 4