Consider the following statements :i. The failure of many structuresii. Accidents on major highwaysiii. Discharge of effluents which pollute riversiv. Dangerous gas emissionsThese are attributable to :1. Improper design2. Not adhering to proper maintenance practices3. Lack of proper inspection and quality control during construction4. Corruption amongst several con-caned individuals5. Lack of public concernSelect the most appropriate answer using the codes given below :

Consider the following statements :i. The failure of many structuresii

1.	Consider the following statements :i. The failure of many structuresii. Accidents on major highwaysiii. Discharge of effluents which pollute riversiv. Dangerous gas emissionsThese are attributable to :1. Improper design2. Not adhering to proper maintenance practices3. Lack of proper inspection and quality control during construction4. Corruption amongst several con-caned individuals5. Lack of public concernSelect the most appropriate answer using the codes given below :
A.	1, 2 and 3 only
B.	1, 2 and 4 only
C.	3, 4 and 5 only
D.	1, 2, 3, 4 and 5
Answer» E.