A system described by the transfer function \(H\left( s \right) = \frac{1}{{{s^3} + a{s^2} + ks + 3}}\) is stable. The constraints on a and k are

A system described by the transfer function \(H\left( s \right) = \fra

1.	A system described by the transfer function \(H\left( s \right) = \frac{1}{{{s^3} + a{s^2} + ks + 3}}\) is stable. The constraints on a and k are
A.	a > 0, a k < 3
B.	a > 0, a k > 3
C.	a > 0, a k > 0
D.	a > 0, a k < 0
Answer» C. a > 0, a k > 0