The impulse response of the Kirchhoff pre-stack time migration operator for non-zero offsets in a homogeneous and isotropic medium is

Q. The impulse response of the Kirchhoff pre-stack time migration operator for non-zero offsets in a homogeneous and isotropic medium is

(A) a circle.                                                   (B) a parabola.

(C) a hyperbola.                                            (D) an ellipse.

Ans: an ellipse.