On turning round I saw that all the graves were open, that all the dead bodies had emerged from them, and that all had effaced the lies inscribed—engraved or written on the gravestones by their relations, substituting the truth instead.

Why is this passage a turning point in the story?
It changes the narrative tone from romance to horror.

It sets up the events necessary for the surprising conclusion.

It serves as the beginning point for a lengthy flashback.

It replaces the original limited narrator with an all-knowing one.

Question

On turning round I saw that all the graves were open, that all the dead bodies had emerged from them, and that all had effaced the lies inscribed—engraved or written on the gravestones by their relations, substituting the truth instead.

Why is this passage a turning point in the story? 
 It changes the narrative tone from romance to horror. 

 It sets up the events necessary for the surprising conclusion. 

 It serves as the beginning point for a lengthy flashback. 

 It replaces the original limited narrator with an all-knowing one.