¬¨√¶th or ¬¨¬∫th extra space is left in sewer pipes at maximum discharge for#

Low estimates of the average and maximum flows

Large scale infiltration of storm water

Unexpected increase in population

¬¨√¶th or ¬¨¬∫th extra space is left in sewer pipes at maxim

1.	¬¨√¶th or ¬¨¬∫th extra space is left in sewer pipes at maximum discharge for#
A.	Low estimates of the average and maximum flows
B.	Large scale infiltration of storm water
C.	Unexpected increase in population
D.	All the above
Answer» E.