In a second order under damped system, the

A. Time required for the response of first reach its ultimate value is called the response time

B. Overshoot (which is a measure of how much the response exceeds the ultimate value) increase with the decrease of damping co-efficient e

C. Decay ratio (which is the ratio of the sizes of successive peaks) is equal to the reciprocal of overshoot

D. None of these

Answer: Option B