When a supply voltage has been zero for a period of time in excess of 1 minute, the long duration voltage variation is considered as

When a supply voltage has been zero for a period of time in excess of

1.	When a supply voltage has been zero for a period of time in excess of 1 minute, the long duration voltage variation is considered as
A.	Sustained interruption
B.	Long-term dip
C.	Long-term sag
D.	None of the above
Answer» B. Long-term dip