The relative stability of a sewage sample, whose dissolved oxygen is same as the total oxygen required to satisfy BOD, is______________?

The relative stability of a sewage sample, whose dissolved oxygen is s

1.	The relative stability of a sewage sample, whose dissolved oxygen is same as the total oxygen required to satisfy BOD, is______________?
A.	1
B.	100
C.	infinite
D.	zero
Answer» C. infinite