What Would Happen to the Gravitational Force on Earth If

Multiple Choice

What would happen to the gravitational force on Earth if the Sun were to be replaced by a 1-solar-mass black hole?

A) The gravitational force on Earth would become extremely high, sufficient to pull Earth into the black hole.
B) The gravitational force on Earth would double in strength.
C) The gravitational force on Earth would remain as it is now.
D) The gravitational force on Earth would be much less because the gravitational field of a black hole exists only very close to it.