A proportional controller with gain K is used to control a spring and mass system as shown in the figure below.
If K is adjusted so that the second-order, closed-loop system model is $$(Y(s))/(R(s))=50/(s^2+2s+150)$$, then the system damping ratio is most nearly:
A. 0.8
B. 0.08
C. 0.0067
D. 0