For underdamped second order systems the rise time is the time required for the response to rise from

For underdamped second order systems the rise time is the time require

1.	For underdamped second order systems the rise time is the time required for the response to rise from
A.	0% to 100% of its final value
B.	10% to 90% of its final value
C.	5% to 95% of its final value
D.	either (a) or (b)
Answer» B. 10% to 90% of its final value