Which one of following is correct condition to check the stability of sysytem in terms of impulse response?

Which one of following is correct condition to check the stability of

1.	Which one of following is correct condition to check the stability of sysytem in terms of impulse response?
A.	Œ£x(n) = 0
B.	Œ£x(n) = ‚àû
Answer» B. Œ£x(n) = ‚àû