In the Context of Black Holes, a Singularity Is A(n)

Multiple Choice

In the context of black holes, a singularity is a(n)

A) place just outside the event horizon of a rotating black hole where it is impossible to remain at rest.
B) entry point in the event horizon of a black hole through which material is allowed to pass unhindered.
C) place where a nonzero mass occupies zero volume.
D) place where the escape velocity exactly equals the speed of light.