Which of the following statements about black holes is true for an object falling into a black hole?
A) From an outside observer's viewpoint, the object falls quickly through the event horizon.
B) From an outside observer's viewpoint, light from the object will become increasingly blueshifted as it approaches the event horizon.
C) In the object's reference frame, the object will slow down as it falls and come to a stop just before it reaches the event horizon.
D) Once the object crosses the event horizon, it can no longer communicate with anything outside the black hole.
D) Once the object crosses the event horizon, it can no longer communicate with anything outside the black hole.
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a.
b.
c.
