Airplane Performance & Stability

For an airplane having directional / weathercock static stability, which of the following options is/are correct?

Options:

• (A) The airplane when disturbed in yaw , from an equilibrium state, will experience a restoring moment
• (B) The variation of yawing moment coefficient (Cn) with sideslip angle (β) for the airplane will look like
• (C) The airplane will always tend to point into the relative wind
• (D) The airplane when disturbed in yaw will return to equilibrium state in a finite amount of time after removing the disturbance