Which of the Following Best Describes What Would Happen If

Which of the following best describes what would happen if a 1.5-solar-mass neutron star,with a diameter of a few kilometers,were suddenly (for unexplained reasons) to appear in your hometown?

A) The entire mass of Earth would end up as a thin layer,about 1 cm thick,over the surface of the neutron star.
B) It would rapidly sink to the center of Earth.
C) The combined mass of Earth and the neutron star would cause the neutron star to collapse into a black hole.
D) It would crash through Earth,creating a large crater,and exit Earth on the other side.
E) It would crash into Earth,throwing vast amounts of dust into the atmosphere which in turn would cool Earth.Such a scenario is probably what caused the extinction of the dinosaurs.