The following statements are attributed to design, maintenance, corruption or lack of concern?

Question

Consider the following statements:

1. The failure of many structures
2. Accidents on major highways
3. Discharge of effluents which pollute rivers
4. Dangerous gas emissions

These are attributed to:

1. Improper design
2. Not adhering to proper maintenance
3. Corruption amongst several concerned individuals
4. Lack of public concern

Select the most appropriate answer using the codes given below:

1. 1,2 and 3 only
2. 1,2 and 4 only
3. 3,4 and 5 only
4. 1,2,3,4 and 5