The impulse response h[n] of an LTI system ish[n] = u[n + 3] + u[n - 2] - 2u[n - 7].Then the system is:1. Stable2. Casual3. Unstable4. Not casual.Which of these are correct?

The impulse response h[n] of an LTI system ish[n] = u[n + 3] + u[n - 2

1.	The impulse response h[n] of an LTI system ish[n] = u[n + 3] + u[n - 2] - 2u[n - 7].Then the system is:1. Stable2. Casual3. Unstable4. Not casual.Which of these are correct?
A.	1 and 2 only
B.	2 and 3 only
C.	3 and 4 only
D.	1 and 4 only
Answer» E.