Which of the following are claimed as advantageous in respect of aerobic sludge digestion as compared to anaerobic sludge digestion ?1. Lower BOD concentration in supernatant liquor.2. Production of a sludge with excellent dewatering propensity.3. Greater production of methane.4. Lesser operating cost.5. Lesser capital cost.Select the correct answer using the codes given below :

Which of the following are claimed as advantageous in respect of aerob

1.	Which of the following are claimed as advantageous in respect of aerobic sludge digestion as compared to anaerobic sludge digestion ?1. Lower BOD concentration in supernatant liquor.2. Production of a sludge with excellent dewatering propensity.3. Greater production of methane.4. Lesser operating cost.5. Lesser capital cost.Select the correct answer using the codes given below :
A.	1, 2 and 4
B.	2, 3, 4 and 5
C.	3, 4 and 5
D.	1, 2 and 5
Answer» E.

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