Which of the following statements is true regarding the stability of a control system?

A$)$ The system is stable if all poles of its transfer function are in the right half of the s$-$plane.

B$)$ The system is stable if the real parts of all poles of its transfer function are negative.

C$)$ The system is unstable if it has any pole in the right half of the s$-$plane.

D$)$ The system is stable if all poles and zeros of its transfer function are on the imaginary axis.