One Main Objection to "Passing Star" Tidal Encounter Theories of the Origin

Multiple Choice

One main objection to "passing star" tidal encounter theories of the origin of the solar system is ...

A) such close encounters of stars should be very rare.
B) such close encounters of stars should be very frequent.
C) there would be no gravitational force between the sun and another star.
D) the sun is not moving through space.